The Core Commander is a boss fought within the Desert of Beginnings. It is the final story boss of Core Keeper.

Summoning

The Core Commander can be summoned for the first time by interacting with and shattering the Crystal Meteorite after obtaining all six titan souls.

Once defeated, it can be re-summoned by placing a Core Commander Summoning Idol on the rune inside the meteorite.

Behavior

In both phases, the Core Commander is initially invulnerable, with three spheres orbiting it. When a sphere is defeated, it will fall to the ground, remain stationary, and continuously release damaging electric orbs in a pentagonal pattern. Defeating all three spheres will paralyze the Core Commander and make it vulnerable to damage for a period of time. After that, all spheres will restore to full health and begin orbiting again, and the fight continues. The player will have to repeat this to deplete Core Commander's health.

The Core Commander's health loss during each vulnerable period is soft-capped at 50% max health. Meaning, under normal circumstances, the player has to paralyze it at least two times to defeat a phase (four times in total). However, it's possible to do enough damage with enough speed in each phase to skip the cap.

Phase 1

The Core Commander has three different kinds of attacks during phase 1:

• Summons lightning bolts near the player, with 4 different patterns. All these attacks will stay around the location at which they were summoned, and will not follow the player's movement.
  • Surrounds the player with a circle of lightning bolts, with an opening on a random direction. The lightning bolts will orbit around for a short period, and close in.
  • Summons two rows of lightning bolts above and below the player, with an opening on both of the rows. The lightning bolts will quickly close in after a brief delay.
  • Summons a total of three groups of lightning bolts that close in on the player.
  • Summons a single lightning bolt that close in on the player at relatively fast speed.
• Periodically summons numerous purple whirlwinds that pulls nearby players. After a whirlwind deals damage to the player, it will disappear.
  • The summon location of whirlwinds is indicated by glowing runes on the ground. However, contrary to the visuals, the whirlwind will be able to deal damage earlier than they have formed from the runes. They can even directly generate below the player, resulting in immediate damage before the player can react.
• Fires three triangular projectiles that directly home in on the player and deal high damage. They dissipate upon hitting a block or after several seconds.

After depleting Core Commander's health, it restores to full health, becomes the "Unleashed Core Commander", and enters its second phase.

Phase 2

In addition to attacks from phase 1, the Core Commander gains a new attack: informed by a striking sound, the Core Commander turns space around it into void, leaving three circular safe zones. The location of the safe zone are usually near the orbiting spheres.

Staying in void inflicts the player with a debuff which damages the player at a rate of 20% health per second, forcing the player to stay in the safe zones. The same lightning bolt attacks used in phase 1 (except the single lightning bolt attack) will be performed around all the safe zones. The safe zone will shrink in size over time, eventually to a radius of about only 1 tile, then this attack ends. If the Core Commander is paralyzed during this attack, the attack will end immediately.

As well core commander now spawns whirlwind farther out and the movement speed of lightning bolts is increased.

Drops

Item	Amount	Chance per roll	Chance for one
Core Tech Chest	1	100%
1 roll of the following 5 items
Void Gun	1	20%
Trinity Heart	1	20%
Core Commander Helm	1	20%
Core Commander Brigandine	1	20%
Core Commander Greaves	1	20%
6 rolls of the following 13 items
Ancient Gemstone	5–8	26.33%	84.02%
Beast Booster	1–2	7.9%	38.97%
Starlight Shards	1	1.97%	11.28%
Core Commander Figurine	1	3.42%	18.86%
Unleashed Core Commander Fi...	1	1.12%	6.53%
Void Gun	1	3.95%	21.48%
Trinity Heart	1	3.95%	21.48%
Core Commander Helm	1	3.95%	21.48%
Core Commander Brigandine	1	3.95%	21.48%
Core Commander Greaves	1	3.95%	21.48%
Jungle Emerald	1–2	13.17%	57.13%
Ocean Sapphire	1–2	13.17%	57.13%
Desert Ruby	1–2	13.17%	57.13%
Only during Easter
Gray Easter Egg	1	15%
Only during Halloween
Samhain Goodie Bag	1	10%
Spookaveling Figurine	1	1%
Spooky Blanket Hood	1	2%
Spooky Blanket Cape	1	2%
Only during Christmas
Snowball	1	50%
Cookies & Milk	1	20%
Gingerbreadling Figurine	1	1%
Gingerbread Hood	1	1%
Gingerbread Top	1	1%
Gingerbread Pants	1	1%

Aftermath

After defeating the Core Commander, interacting with The Core will play the outro followed by the credits.

Additionally, the Cloaked Merchant will begin selling the Core Commander Summoning Idol.

Notes

• In multiplayer, the Core Commander gains additional health depending on the amount of players in the world. It will automatically adjust whenever a player joins or leaves the world.

Players	Total max health
	Casual	Standard	Hard
1	232692 13350 (sphere)	465385 26700 (sphere)	698078 40050 (sphere)
2	405140 23244 (sphere)	810282 46487 (sphere)	1215424 69731 (sphere)
3	560375 32150 (sphere)	1120752 64300 (sphere)	1681129 96449 (sphere)
4	705390 40470 (sphere)	1410784 80939 (sphere)	2116177 121409 (sphere)
5	843252 48379 (sphere)	1686508 96758 (sphere)	2529764 145137 (sphere)
6	975669 55976 (sphere)	1951342 111952 (sphere)	2927015 167928 (sphere)
7	1103722 63323 (sphere)	2207450 126645 (sphere)	3311177 189968 (sphere)
8	1228156 70462 (sphere)	2456317 140923 (sphere)	3684478 211385 (sphere)

Achievements

Visitor From A Dying World • "Defeat the Core Commander" (Bronze • 50 G • 50 XP) Defeat the Core Commander for the first time.

Dialogue

Before the fight

• Our world... long ago hath been erased.
• This one we discovered, amidst a multitude.
• There hath been mistakes...
• Thanks to thee, 'tis finally accomplished.
• Yet there exists no room for thee in our rekindled society.

Phase transition

• Thee strength is why thy must perish!

After the fight

• Another world... which hath expelled us.
• Or... was it the unity of its inhabitants?

History

• 1.2.0.3:
  • Changed Core Commanders void attack to come in from the outside and start with much larger safe areas that quickly shrink to prevent unavoidable damage.
  • Core commander's phase 2 now speeds up lightning bolts movement speed and makes whirlwinds spawn farther out.
• 1.1.2.4: Moving during the Core Commander's death animation no longer causes some particle effects to appear in the wrong location.
• 1.1.2.1: Fixed an issue that caused the end dialogue to appear after respawning.
• 1.1.2.0:
  • Improved the visual effect for its void attack.
  • Electricity orb movement speed increased from 9 to 13.
• 1.1.0.2:
  • Fixed a bug that prevented the Core Commander from healing back to full health if the player died while in the second phase.
  • Exiting the world while the Core Commander is doing the void area attack no longer results in a void attack with no safe areas when the world is reloaded.
  • The void attack should no longer trigger after healing back to the first phase.
  • Electricity orb movement speed increased from 5 to 9, duration increased from 1.5 to 3 seconds, and fire rate decreased from 2 to 3.5 seconds.
• 1.0.1.11: Electricity orb movement speed decreased from 7 to 5, and duration decreased from 10 to 1.5 seconds.
• 1.0.0.2: The area-of-effect attack now correctly deals damage instead of healing the player.
• 1.0.0.1: Introduced.

Creatures:    Enemies Bosses Merchants Cattle Pets Critters

Enemies Undergrounds Orange Slime Red Slime Shrooman Shrooman Brute Clay Caves Caveling Skirmisher Caveling Spearman Clay Burrower Cocoon Larva Hive Larva Big Larva Big Hive Larva Acid Larva Larva Hive Egg Forgotten Ruins Caveling Caveling Shaman Caveling Brute Electro-Pest Azeos' Wilderness Purple Slime Snare Plant Caveling Gardener Caveling Hunter Infected Caveling Mold Tentacle Floracada Sunken Sea Blue Slime Tentacle Bubble Crab Caveling Scholar Core Sentry Desert of Beginnings Bomb Scarab Caveling Assassin Caveling Mummy Lava Slime Lava Butterfly Gold Scarab Cicada Nymph Desert Cicada Shimmering Frontier Mimite Orbital Turret Crystal Snail Nilipede Passage Sulfur Worm Colossal Amoeba Others Royal Slime Nature Worm Bosses Progression Glurch the Abominous Mass Ghorm the Devourer Malugaz the Corrupted Azeos the Sky Titan Omoroth the Sea Titan Ra-Akar the Sand Titan Druidra the Wild Titan Crydra the Ice Titan Pyrdra the Fire Titan Core Commander Optional King Slime The Hive Mother Ivy the Poisonous Mass Morpha the Aquatic Mass Igneous the Molten Mass Atlantean Worm Urschleim Event variants Haunted Hive Mother Awakened Azeos Merchants Bearded Cloaked Fishing Seasonal Brave Cattle Moolin Moolin Calf Bambuck Bambuck Kid Strolly Poly Strolly Poly Nymph Dodo Dodo Chick Kelple Kelple Hatchling Drohmble Drohmble Calf Pets Melee  Subterrier  Jr. Orange Slime  Prince Slime  Electro-Pet  Jr. Purple Slime  Jr. Blue Slime  Jr. Lava Slime  Snugglygrade Range  Embertail  Fanhare Buff  Owlux  Earie  Pheromoth  Arcane Symbiote Critters Ground Blackbug Earthworm Larvlet Pest Bug Leafhopper Sun Pincher Moon Pincher Little Death Manyleg Gem Snail Shadow Newt Flying Yellow Glowbug Blue Glowbug Green Glowbug Red Glowbug Dusk Fairy Dream Messenger Citrus Pinion Ice Wind Crimson Wing Snoot Fly Drape Ray Others Ghost Scholar The Core