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Guide:Defending against events

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The Guide Rewrite ProjectStatus: Under revision
This Guide is currently being revised or has been revised partially. It does not meet all quality standards yet.Issue(s):
 • Blood Moon, Old one's army, Martian Madness and Lunar Events need to be revised.
 • Some events needs to be split due to a surge of new content or to prevent bloating. Events that might need new pages are: Goblin Army, Pirate Invasion and Solar Eclipse.

This Guide covers all Events currently implemented in Terraria up until

Blood Moon[edit | edit source]

Blood Moon Defense.png

Blood Moons are events that have a 1/10 chance of occuring each night once the Player has 120 life or more, and can be a hassle for newer players who are caught unaware. Not only does the monster spawn rate increase dramatically during a Blood Moon, but the maximum amount of enemies that can be on screen also rises significantly, allowing swarms of enemies to appear at one time. Additionally, monster spawns completely ignore reduced spawn rates by way of NPCs. Zombies can break open doors during this event, posing significant danger to NPCs inside houses.

However, there are ways to profit from Blood Moons if one is prepared, especially thanks to rare spawns such as The Groom.

Generally, Blood Moons can be done safely through by simply staying in your base, as long as all doors are either prevented from opening inwards or simply barricaded by blocks.

In Hardmode, Clowns will spawn during the Blood Moon.

Goblin Army[edit | edit source]

Click to see a list of pages to be split It has been suggested that this page or section be split to Guide:Goblin Army strategies.
Reason: "This event requires a separate page in order to make player be better prepared, using the same format that bosses use. -- Murrayzero"
Stuck Goblins.png

Goblins will appear at the spawn point and kill any NPCs they find. They will continually spawn until the progress bar is full, at which they are defeated. They can be spawned by using the Goblin Battle StandardGoblin Battle Standard, or with a 1/20 chance at dawn by smashing at least one Shadow OrbShadow Orb / Crimson HeartCrimson Heart and one player with at least 200 HP.

This group has multiple types of units with different attack patterns, so strategies for dealing with them will differ depending on the type of goblin.

  • The Goblin Sorcerer will teleport no matter where the player(s) are and will shoot a projectile at you.
  • The Goblin Thief is a fast paced enemy that can jump high and open doors faster than other goblins.
  • The Goblin Peon is 2 blocks tall and can destroy doors.
  • The Goblin Warrior has more health and does more contact damage to players.
  • The Goblin Archer will shoot wooden arrows at the player(s).
  • The Goblin Summoner is a Hardmode-exclusive mini Boss that is much stronger than the others, and drops unique loot.

If the player is strong enough to easily handle the goblins, a long, flat field near the base would be the best place to deal with the army, as it would be close enough to the spawn point to appear while keeping the goblins away from the NPCs. Weapons that can do damage to multiple enemies at once such as the Space Gun or Jester's Arrows are useful for taking out crowds.

Digging a pit on both sides of your base is a simple but effective way of holding back most of the goblins, save for sorcerer and archer goblins. Just simply dig a hole five deep by six wide or dig the pit next to a wall so when the goblins try to jump the pit they will hit the wall and fall into the pit. The downside to using a pit by itself, (without lava or other traps), is that after taking out the sorcerers and archers you still need to take care of the goblins in the pit. However, you can use the Spiky Balls dropped from the goblins you already killed and throw them into the pit to take them out from a safe distance.

Old One's Army[edit | edit source]

See Guide:Old One's Army strategies.

Pirate Invasion[edit | edit source]

Pirate Invasion Strategy.png

The Pirate Invasion is the Hardmode version of the Goblin Army at it's simplest. It can be spawned:

  • By smashing at least one Demon AltarDemon Altar / Crimson AltarCrimson Altar and then it has ~4% chance to happen if it has yet to be defeated, subsequently having a ~2% chance to happen;
  • Use Pirate MapPirate Map.

A step up from goblins, these guys will give you a hard time if you don't know how to effectively deal with them. The Pirate Invasion has multiple types of units with different attack patterns. The event currently contains six (seven on Desktop and Console) enemies:

If you want to face the pirates head-on you must be prepared. Defeating these pirates is not an easy feat for a fresh hardmode player: you will want to use weapons that pierce multiple enemies at once, such as Jester's Arrows or the Magical Harp. Alternatively, you can make sure the Pirates stay below you, with you on a wooden platform. Then use a powerful Spear to slay the attackers. If you have the Clockwork Assault Rifle, it is a good tactic to continually fly over the pirates and shoot at them.

When a Captain appears, focus all of your attention on him, because he will stop attacking when damaged.

On the Desktop and Console versions, the Flying Dutchman will rain down cannonballs on you while spawning more of the basic Pirates. To defeat it, stand next to it and use a piercing weapon to hit multiple Cannons at once. When you take out all 4 cannons, the ship will explode.

Solar Eclipse[edit | edit source]

Eclipse Bunker.png

The monsters spawned during a Solar Eclipse are very powerful. The Reaper acts similarly to a Wraith, but with higher stats. The Swamp Things are extremely fast, and they are as common as zombies. Vampires are equally as common as zombies, and can turn into bats if the player is above them. Eyezors are not very common during a Solar Eclipse, but they can shoot lasers from their eyes, making them formidable enemies. They are slightly faster than regular zombies and gain speed as they lose health. They are extremely tanky with high health points. Frankensteins are as common as zombies, but move much faster.

The Solar Eclipse strategy is simple to understand. Every enemy but the Reapers and Vampires use standard Fighter AI, and even have the same jump range as basic Zombies and Goblins. They will walk into pits just like any other zombie. Lava pit traps will destroy the whole invasion force but the reapers. Hence, the easiest way to nullify most of the threat is to dig a simple tunnel underneath a small lava pit on some leveled terrain, while collecting all the drops. That allows players to simply focus on fighting the Reapers and Mothrons if all three Mechanical Bosses have been defeated.

However, as of 1.3, this event is significantly more dangerous, especially after the bosses are defeated, as more powerful enemies will spawn, though the drops are also worth the trouble. Mothrons are considered mini-bosses, so always prioritize them when they spawn. Nailheads and Dr. Man Flies should be tackled at range. Nailheads have 4000 health (8000 in expert mode), but their nails are far less damaging than touching them. While Dr. Man Flies have less health, their flasks deal heavy area damage and serve as a constant distraction. Deadly Spheres, as their name implies, should be taken with care due to their small size, high damage and defense. Failing to do so often results in serious hits, if not death. Butchers and Psychos, while only having melee range, are not to be underestimated as they can chip off quite some health if left unhindered.

Another strategy consists of using Wings to fly above enemies and hitting them with debuff-inflicting weapons, such as Cursed Flames, and then hitting them with a stronger weapon to finish them off. It is preferred to use a Daedalus Stormbow with Cursed Arrows and a Meteor Staff to destroy the enemies. This does require some mana potions but works effectively if you don't want or need an arena.

Frost Legion[edit | edit source]

There are three unique monsters in the Frost Legion, named Mister Stabby, Snowman Gangsta, and Snow Balla. The Frost Legion does not happen on its own. The player has to obtain a Snow Globe from a Present to summon them. The summon item can only be obtained in Hardmode, but the Legion can still be summoned and defeated in a non-Hardmode world. Mister Stabby is a threat due to his high contact damage, and it is suggested to fight the entire event with ranged weapons. However, the enemies deal medium to high damage, so sets with a higher defense value are suggested.

For the Frost Legion, if you're far enough underground, then the snowmen won't spawn, even after getting the message that they've arrived, so you don't have to head back to your house immediately upon receiving message of an imminent attack. However, they will remain and will appear if you surface. The Snowmen are incapable of jumping down from simple wooden platforms, meaning it is possible to construct a basic trench with a wooden platform above it, and be completely out of harms way.

If you place lava pits on either side of your house, you can defeat most of the snowmen that spawn, however, Snow Ballas may block up the traps, inhibiting the trap from killing any more snowmen. Filling the empty space of any traps with Wooden Beams will prevent Snow Ballas from blocking up the traps. The beams occupy the same layer as other furniture and do not block movement.

Pumpkin Moon[edit | edit source]

For more and detailed strategies, see Pumpkin Moon strategies

The Pumpkin Moon is a Hardmode Post-Plantera event, in which Halloween-themed enemies invade the world. It can only be started by crafting and using a Pumpkin Moon MedallionPumpkin Moon Medallion during night.

Some Pumpkin Moon enemies are susceptible to the Ichor debuff, making Flask of Ichor useful in earlier waves. Towards the later waves, the player will mostly be attacking Mourning Woods and Pumpkings, which are immune to Ichor, making the debuff less useful.

It is a good idea to place Spear Traps over areas where enemies will be congregating. They work best when wired to different Timers, as a row of spears firing at the same time can only hit an enemy once.

End-game gear is highly recommended, with post-Golem or Duke Fishron weapons.

Frost Moon[edit | edit source]

See Guide:Frost Moon strategies.

The Frost Moon is a Hardmode Post-Plantera event, in which Christmas-themed enemies invade the world. It can only be started by crafting and using a Naughty PresentNaughty Present during night.

Martian Madness[edit | edit source]

Desktop versionConsole version Desktop/Console-Only Content: This information applies only to the Desktop and Console versions of Terraria.

The smaller enemies can be easily defeated using a generic trap, one of which would be a platform above a lava pit, which may or may not have Dart Traps, or traps from the Lihzahrd, built in. It is also advisable to have some heart and/or star statues hooked up to a timer.

The only hard part about the event is the Martian Saucer. However, almost all damage from it can be avoided by simply building a roof over the player's head. Almost all of the Saucer's attacks can not go through blocks (with the exception of the rockets' AoE damage), and it will always hover a given height over the player, so a roof can easily be constructed between. All the player needs is a weapon that can go through blocks. The Blizzard Staff, or the Nettle Burst will suffice, though the Blizzard Staff is the best choice. Alternatively, minions or a yo-yo can be maneuvered around a roof, to hit the saucer. The Daedalus Stormbow can also take down the Saucer while the player stays sheltered. Since the Saucer is immune to debuff, pick arrows for damage; Holy Arrows are a good standby. If you are a summoner, you can very easily farm this event by sealing yourself in a box that is small, but not small enough so that the Martian Saucer's missiles can harm you through the walls with splash damage. If your summons cannot pass through solid blocks, then be sure to summon them outside of the box so they can reach the enemies.

An example of a lava pit, complete with heart/star statues and traps hooked up to a timer.

Lunar Events[edit | edit source]

Desktop versionConsole version Desktop/Console-Only Content: This section's information applies only to the Desktop and Console versions of Terraria.
See Guide:Lunar Events strategies.

General Strategies[edit | edit source]

General Tips[edit | edit source]

This content is transcluded from Guide:Practical Tips.

  • Starting the battle as soon as the sun sets (at 7:30 p.m.) will provide the maximum amount of time to defeat nocturnal bosses.
  • Prepare your Boss-fighting arena with adequate lighting, CampfiresCampfires and Heart LanternsHeart Lanterns for health regeneration, and Stars in BottlesStars in Bottles for mana regeneration if you use magic.
  • Desktop VersionConsole Version SunflowersSunflowers provide the Happy! buff to players within a 50-tile radius, which grants a +10% movement speed bonus and 17% reduction in enemy spawn rate.
  • Always bring with you at least one stack of LesserLesser, NormalNormal, GreaterGreater, or Super Healing PotionsSuper Healing PotionsDesktop VersionConsole Version before doing anything: relying only on natural Health Regeneration is not a good idea.
  • It is suggested to build houses for the DryadDryad and the NurseNurse NPCs in your arena. The former casts the Dryad's BlessingDryad's BlessingDesktop VersionConsole Version buff, which increases your defense and provides you with a thorns-like effect, while the latter can heal and remove debuffs instantly, at the cost of some coinscoins.
  • Bosses are displayed on the Minimap: Follow the boss's icon to track it when you're struggling to find it. You can identify the boss icons by checking their respective wiki pages.
  • Once you have freed the MechanicMechanic in the Dungeon, you can use WireWire to enhance your arena with TrapsTraps and helpful HeartHeart and Star StatuesStar Statues. The former help to damage the enemies, though be careful to set them up correctly in order not to hurt yourself during the battle. The latter will spawn heart and star pickups, respectively. Connect these devices to timerstimers.
  • It may be useful to summon and kill the Eye of Cthulhu before summoning any harder boss in order to spawn an extra one-use pool of hearts.
  • Remember to use the Sharpening StationSharpening StationDesktop VersionConsole Version, Ammo BoxAmmo BoxDesktop VersionConsole VersionOld-gen console versionMobile Version, Crystal BallCrystal Ball, and Bewitching TableBewitching TableDesktop VersionConsole Version before you go to explore or battle Bosses / Invasions. These will give class-specific boosts that are useful to take. They respectively give SharpenedSharpenedDesktop VersionConsole Version, Ammo BoxAmmo BoxDesktop VersionConsole VersionOld-gen console versionMobile Version, ClairvoyanceClairvoyance, and BewitchedBewitchedDesktop VersionConsole Version.

Cannons[edit | edit source]

The Cannon and the Bunny Cannon, purchased from the Pirate, bring a lot of firepower to protect a base. Keep in mind that you have to be next to the cannon (and have ammunition for it) to use it effectively; when used remotely with wires the cannon's projectiles do not inflict any damage. A cannon placed on platforms cannot aim down, however firing straight up will result in the cannonball eventually falling back straight down.

Lava[edit | edit source]

Lava is a useful tool for thinning out the numbers of enemies. By placing a single bucket of lava in a sufficiently wide 1-block-deep trench, it is possible to create a pool shallow enough to kill off most enemies while preserving their loot (such traps can be tested easily by throwing cheap items into the trench—if they burn up, widen the trench). This is a common way to burn enemies to death while allowing their item drops to collect as they approach your home. Other variations include "waterfalls" of lava or even entire moats, albeit using large bodies of lava means any item drops will be destroyed as well, though it is always fun to watch zombies pour into a pit of lava in masses.

Note that enemies killed by lava will not be counted on the monster kill tallies and will not contribute to banners.

Lava Moat[edit | edit source]

Since monsters cannot spawn on lava, you can force monsters to spawn in a reduced area to more effectively affect them with traps, sentries, and other attacks. Create a "spawn surface" ten-to-fifteen blocks wide. Surrround it by lava moats about 40 blocks wide on both sides, and fill up any nearby holes or cave. While the event is happening, make sure to keep the spawn surface out of sight, for instance by standing on a platform high enough above it. (If you have unlimited flight, a platform is still useful as a visual marker.) Since enemies are concentrated in a small area, they can be easily mowed down by traps and sentries, and since you do not have to move around a lot to fight stragglers you only need one at most of the heart lantern, star in a bottle and campfire, as well as heart statue and star statue.

Sentries[edit | edit source]

Events are the ideal situation for using sentry summons, as they are powerful but stationary defenses, and you have to defend an area. Using an armor set from the Tavernkeep to allow to summon several sentries will let you take care of most regular enemies as quickly as they arrive, allowing you to concentrate on the stronger menaces. With a Bewitching Table and a Summoning Potion you can combine sentries with a few more mobile minions for assistance. Sentries can also be combined with weapons that have a lasting area of effect, such as the Nimbus Rod and the Rainbow Gun.

Traps[edit | edit source]

Traps can be used to help damage enemies. Dart Traps can be found throughout the Underground and especially in the Dungeon, Geysers are found in the Underground, and Super Dart Traps, Flame Traps, Spear Traps, and Spiky Ball Traps are all found in the Lihzard Temple.

Trap Cooldown Direction Range Damage Debuff
Dart TrapDart Trap 3.333 Up, Down, Left, or Right 2700 20 PoisonedPoisoned
Flame TrapFlame Trap 3.333 Left or Right Desktop Version Up, Down, Left, or Right 20 40 On Fire!On Fire!
GeyserGeyserDesktop Version 4.0 Up or Down 20 80
Spear TrapSpear Trap 1.5 Up, Down, Left, or Right 20 60
Spiky Ball TrapSpiky Ball Trap 5.0 Up or Down Desktop Version Up, Down, Left, or Right Unlimited 40
Super Dart TrapSuper Dart Trap 3.333 Left or Right Desktop Version Up, Down, Left, or Right 2700 40 PoisonedPoisoned

When multiple traps are used, they should be staggered so as not to all hit at the same time: an enemy hit by a trap will be briefly invulnerable, so if a monster is hit by two simultaneous darts, only one will damage it.

Dart Traps and Super Dart Traps can protect the sides of your base from low-level threats, such as the Blood Moon zombies, especially if rigged to automatic activation mechanisms (such as Timers, or Pressure Plates in an engine). Flame Traps, Geysers, Spear Traps, and Spiky Ball Traps are more powerful but are best used with methods to keep enemies clustered in a small area, such as a death pit, a hole deep enough that they cannot jump out. A thin layer of lava at the bottom of the death pit will make it even more efficient. To protect Town NPCs and critters, the death pit can be covered by actuated blocks, allowing to quickly open or close it by flicking a switch.

Traps can be placed in the background by using Actuators, actuating them once, then removing the actuators so that further activations will not place them back in the foreground. This is useful for staggering traps, as a background traps will not block the path of another trap's dart, spear, spiky balls, or flames.

Note that enemies killed by traps will not be counted on the monster kill tallies and will not contribute to banners.

Active Stone Blocks and Actuators[edit | edit source]

If you have the mechanic it's easy. Place the active stone block one side of the door and wire it to a switch. It will block zombies,most goblins, and if you're quick, even Swamp Things. You could even make the "door" out of active blocks and turn them off when you need to go through. The same effect can be achieved with actuators.

By using actuators and Grey, Brown, Blue or Lihzahrd pressure plates, you can create a player only door that doesn't even require you to use your cursor. Set up the door as you would an active stone/actuator door and because Grey, Brown, Blue or Lihzahrd pressure plates can only be activated by the player nothing else is able to enter (Or escape). This also works with active stone blocks, which will not look at all weird if your house is made of stone!

Tower of Death[edit | edit source]

If you are in hardmode and have acquired the Nimbus Rod and Wings or anything that allows flight, there's a very efficient and safe way to farm or survive most of these events by making a tall tower, 20 blocks or higher,at least 4 blocks wide, with two entrances from the ground for enemies to come in. At the top of the tower(inside), fly to the top (don't end up killing yourself by using rod of discord), and place some Platforms right under you, enough to cover the width of the tower. Place some torches, if needed. Whenever an event occurs, go to this tower, stand there, constantly summon the clouds, and watch as enemies walk in to their miseries. Note: this method is not perfect, but would cover most of the harms during an event, especially in hardmode. This is very useful during Solar Eclipses, considering you need to worry about the Reapers. The Crimson Rod is not recommended for hardmode Events because of it's low damage output. This also works well with the Water Candle and Battle Potions, if you don't mind the risks of higher spawn rates. You can also make some add-ons to the entrances, making them extend outwards to keep out flying enemies, except the Reapers and wraiths, but due to their movement, they still pose little threat to your tower.

Invincibility Machine[edit | edit source]

Click to see a list of pages with rewrite requests It has been suggested that this page/section be rewritten.
Reason: "The Reason is in the talk page."
Image of the invincibility machine (not in use).

This technique involves overriding all forms of damage with the temporary invincibility granted when damage is taken from a weak enemy such as a statue-spawned slime. This is useful when dealing with Moon events, such as the Pumpkin Moon and Frost Moon, though it also works against bosses (with the exception of the Moon Lord, for whom special measures were put in place to prevent this). The machine fails if the protective slime is killed.

The machine consists of a small 5x6 box half-filled with Honey, such that the player will receive the Honey Regeneration buff, but without drowning. A Teleporter provides an easy way into the machine, and various switches are available to toggle traps and the actuated spawn surface. The Teleporter is optional; you could just actuate yourself in from the top.

It's important to note that the machine will only work if the protective slime is the oldest enemy on-screen. This way, the slimes spawned from the statue will have damage priority over any other mobs that spawn thereafter. Lastly, reactivate the spawn surface before starting the event. If any NPC is killed while the machine is in use, then it will fail.

The downside of an invincibility machine is that the player's options become limited. Generally, the best approach is to use a summoner build with the highest-damage summoning armor available and five damage-increasing accessories (Summoner Emblem, Papyrus Scarab, Necromantic Scroll, Hercules Beetle, and Avenger Emblem - all with the Menacing Modifier). Most summoning weapons can attack enemies outside while preserving the protective slime. The exceptions are the Tempest Staff, Stardust Dragon Staff, and Rainbow Crystal Staff. The Stardust Guardian will kill the slime if placed too close to the player, but it is okay to summon it at a distance.

One of the few weapons that can be used from within the box is the Blizzard Staff, as its projectiles cannot enter the invincibility machine. The Meteor Staff can be used the same way, but the box must be constructed with a thicker ceiling, because the explosions can potentially kill the slime. Spears cannot be used, as the slime will periodically jump near the player's head area and enter the damage hitbox of the spear. In the late game, one can also set up a Staff of the Frost Hydra and Lunar Portal Staff for free damage. The Lunar Flare may be used to eliminate faraway enemies to either side, but any explosion that occurs too close to the machine will kill the slime. It also might not be a bad idea (if the player does not have the Cobalt Shield or any of its upgrades) to grapple to the side of the machine, because being knocked around by a slime is a little bit annoying (though it won't compromise the integrity of the machine). You can also simply place two target dummies next to each other, then build a row of any kind of block (with the the exception of falling blocks and platforms) 8 tiles above the ground you put the target dummies on. Next step: get yourself a slimy saddle, and hop on the target dummies. Be careful not to hit the dummies with any weapons. Besides, you won't need weapons anyways. The slime will damage anything that hovers close to your player.

A better option may be is to place 2 target dummies close to each other then placing any blocks 4 blocks above the dummies. Now ride the slimy saddle and you will be invincible to most attacks. When a player bounces onto an enemy while riding a slimy saddle, both player and the enemy will gain an invincibility frame. Since the enemy gains a longer invincibility frame, by setting up two target dummies, you will always be invincible. Just do not use any piercing damage or else you will fall and you will take damage. Note that this tactic does not work for the Moon Lord and the dungeon guardian.

Another idea would be to set up a teleporter circuit that constantly teleports you between rooms with heart statues lined up on the walls in each. This could also be combined with the idea above. With this setup, the player could teleport around, avoiding attacks and healing while under the immunity of the slime's attacks. However, this would make the project harder to set up as the player would have to build multiple copies of each room.