Vortex Gaming

Introduction to all bosses in Core Keeper There are a total of 18 bosses (including 2 Halloween and Easter skins) The skins only change the appearance, the drop items are the same There are 10 essential bosses and 8 additional bosses Explanation of each boss location and strategy

First essential boss, easiest difficulty Must find the location manually because there is no scanner Can be found in the early mud biome Only does jump attacks, so it is best to fight with ranged weapons The slime on the floor reduces movement speed Attack frequency increases in phase 2 Be careful because it recovers health if you leave the boss fight area Defeating it grants the first merchant summoning item and the first statue activation eye Can be resummoned by placing a Giant Slime Idol (purchased from the merchant)

Second essential boss Location can be checked with a scanner, but it is easy to find because it cycles the map Does not attack until the player deals 20% damage Charge attack is the only attack pattern Ranged weapon use recommended Defeating it grants the second merchant summoning item and the second statue activation crown Can be resummoned at the rune after purchasing the summoning item

Additional boss Can only be encountered through summoning Summon by placing a Crown Idol on the Giant Slime Rune Summoning item can be obtained from all slimes with a low probability Similar to a normal Giant Slime but stronger Summons blue slimes when health drops below 700 (disappears after 60 seconds)

Early additional boss Resides in the Hive biome Scanner use recommended Does not move, fires ranged acid and summons larvae It is best to destroy the larvae eggs immediately Attack frequency increases in phase 2

Last essential boss Drops the item needed to activate the third statue Narrow battle area, creates flames on the floor for 30 seconds when the boss attacks Can put out the fire with a watering can Switches from ranged attacks to melee attacks in phase 2 Summon by collecting 3 shards, converting them into a Crystal Skull, and placing it on the rune Shards can be obtained from the Ruins biome (mobs, chests, merchants)

Scanner needs to be crafted at the Ancient Hologram You must defeat 6 Titans and collect their souls The first Titan is Azeos - Titan of the Sky

Resides in the Outer Expanse Attack patterns: Lightning (fixed, circular, random) Summons crystals that accelerate healing (can be destroyed with a pickaxe or bombs) Melee weapons recommended

Giant slime residing in the Outer Expanse Leaves poisonous slime, causing movement speed reduction and healing reduction debuffs Fires poisonous projectiles Can summon purple slimes

Resides in the Sunken Sea The battle area is covered in water, so you must block it with blocks Attack patterns: Fires tornadoes, summons tentacles (lasts for 90 seconds, melee attacks)

Jump attack, creates slime with a slippery debuff Fires water droplets

Resides in the Desert Sand wave attacks (circular, straight, random groups, tracking) Underground movement attack Summons bomb scarabs (leaves bombs) Summons guided triangles (speed increase buff required)

Most dangerous giant slime Leaves lava, dealing damage Ranged attack, creates projectiles for healing

Additional boss in the Sunken Sea Summoning item acquisition conditions are difficult (obtained after completing a quest) Destroys body segments Charge attack, fires electric projectiles

Pre-final boss Summoning requires a summoning item crafted at the altar Must continuously attack to remove the armor When the armor is removed, the snake falls, and the armor recovers after 9 seconds or when health decreases by 25% Must repeat at least 4 times

Easiest Hydra 4 attack patterns: Bite (melee), laser (tracking), block falls and explodes, summons thorns

Hydra of the Lost Sea Adds an invincible ghost of the past Hydra Fires ice crystals instead of thorns (bidirectional)

Hydra of the Desert, most dangerous Adds 2 ghosts Fireball falls (leaves lava trails)

Collect all the souls of the Titans, talk to the Core, and obtain the final boss location Consists of two phases Phase 1: Lightning attacks (circular, parallel, group, single), purple vortex, guided triangles Phase 2: Turns to night, reducing health by 20% every second (flee to the light area), 3 orbs create armor (destroy the orbs first)

Additional boss A giant wall that moves in circles like a Devourer in the last biome Instant death if you touch the wall You must destroy the 3 bulbs on the wall to reveal the head You can only deal up to 25% damage to the head, so you must repeat it more than 4 times Summoning item can be crafted after defeating it

The summoning item is crafted at the same station as the scanner Attack patterns: Claw attack, summons Shikats (absorbs the player and then melee attacks), summons void

Core Keeper boss guide finished Please add any missing content in the comments