Core Keeper Boss Database
Core Keeper features a progression of major titan bosses plus optional mini-bosses. Each boss requires specific summoning items, arena preparation, and gear. Boss HP scales with the number of players in the world.
Boss Progression Order
| # | Boss | Biome | Tier | Key Drop |
|---|---|---|---|---|
| 1 | Glurch the Abominable Swarm | Dirt Biome | Early | Glurch's Eye |
| 2 | Ghorm the Devourer | Dirt Biome (Deep) | Early | Ghorm's Horn |
| 3 | Malugaz the Corrupted | Clay Caves | Mid | Malugaz's Bone |
| 4 | Azeos the Sky Titan | Azeos' Wilderness | Mid | Azeos' Feather |
| 5 | Omoroth the Sea Titan | Sunken Sea | Late | Omoroth's Scale |
| 6 | Ra-Akar the Sun Titan | Desert of Beginnings | Late | Ra-Akar's Sun Jewel |
| 7 | The Destroyer | The Forge | Endgame | Core Shard |
| — | Ivy the Poisonous Mass | Hive Larva Biome | Optional | Spore Sac |
1. Glurch the Abominable Swarm
| Stat | Detail |
|---|---|
| Biome | Dirt Biome |
| Summoning | Find and break Glurch's Larva — a large glowing orange egg structure in the Dirt Biome |
| HP | ~1,250 (scales with player count) |
| Attacks | • Jump Slam — leaps toward player, creates a pool of slowing slime • Slime Split — splits into smaller slimes when hit • Body Block — pushes player into walls |
| Phase 2 (below 50% HP) | Jump frequency increases; slime pools expand wider |
| Strategy | Kite in a large open area. Keep moving to avoid slime pools. Use ranged attacks for safe damage. Clear smaller slimes before they accumulate. |
| Loot Table | • Glurch's Eye (100%) — used to craft the Radiant Eye (lantern) • Glurch Carapace armor materials • Slime-related food ingredients |
| Gear Check | • Copper armor set (minimum) • Copper bow or Slingshot (ranged) • 5+ bandages • Pickaxe for escaping trapped corners |
| Arena Tip | Glurch will chase you across a large radius. Clear a wide area of blocks before engaging so you have room to dodge. |
2. Ghorm the Devourer
| Stat | Detail |
|---|---|
| Biome | Dirt Biome (Deep tunnels, ~200+ depth) |
| Summoning | Ghorm spawns naturally and patrols a large circular tunnel network. Hit it to flag it and start the fight. It does not despawn. |
| HP | ~2,000 (scales with player count) |
| Attacks | • Burrowing Charge — burrows underground then erupts beneath the player • Body Slam — rears up and slams the ground, dealing area damage • Tunnel Rush — charges in a straight line through the tunnel |
| Strategy | Fight in the tunnel corridors. When Ghorm burrows, move perpendicular to its trajectory. Attack the head for bonus damage. Place campfires or lights to see it coming in the darkness. |
| Loot Table | • Ghorm's Horn (100%) — used to craft Ghorm's Jewel (ring) and other gear • Ghorm Scale armor materials • Meat drops for cooking |
| Gear Check | • Tin armor set or higher • Iron bow or Musket • 10+ food items • Torches / Glow Tulips to light the arena |
| Arena Tip | Clear a section of Ghorm's patrol tunnel of debris. Place wall lights so you always see which direction it's coming from. Ranged weapons are strongly recommended — melee is dangerous against the charge. |
3. Malugaz the Corrupted
| Stat | Detail |
|---|---|
| Biome | Clay Caves |
| Summoning | Find Malugaz's Skull on a pedestal in the Clay Caves. Interact with it to summon the boss. |
| HP | ~2,500 (scales with player count) |
| Attacks | • Fireball Volley — shoots 3–5 fireballs in a spread pattern • Fire Wall — creates a line of fire on the ground that persists for several seconds • Teleport — teleports to a random nearby location • Summon Imp — summons small fire imps to swarm the player • Phase 2 (below 40% HP) — fireball volley doubles in size, fire walls appear faster |
| Strategy | Keep moving at all times. Watch the ground for fire-wall telegraphs. Prioritize killing summoned imps before they overwhelm you. Ranged combat is safest. Health potions or regen food is essential in phase 2. |
| Loot Table | • Malugaz's Bone (100%) — used to craft Malugaz's Staff and other magic gear • Malugaz armor set materials • Fire essence / gems |
| Gear Check | • Iron armor set (minimum) • Iron ranged weapon or fire-ranged (Flamethrower if available) • 15+ food, 10+ bandages • Fire resistance potion strongly recommended |
| Arena Tip | Clear the Clay Caves room of all clay blocks and debris before summoning. The fire walls can block escape routes if the room is too cluttered. |
4. Azeos the Sky Titan
| Stat | Detail |
|---|---|
| Biome | Azeos' Wilderness |
| Summoning | Collect Azeos's Feather from giant glowing eggs in the Wilderness. Use 1 Feather at Azeos' Altar (a stone structure in the Wilderness). |
| HP | ~3,500 (scales with player count) |
| Attacks | • Lightning Strike — large telegraph circle on ground, massive damage if hit • Laser Beam — sweeping beam that covers an arc of the arena • Feather Volley — shoots a fan of feathers that deal piercing damage • Summon Sky Minion — calls small flying adds • Phase 2 (below 50% HP) — lightning and laser frequency doubles; adds spawn continuously |
| Strategy | Focus on dodging the lightning telegraph circles — they one-shot poorly-geared players. Attack when Azeos is stationary after a laser. Kill adds as they spawn. Stay spread out in multiplayer. |
| Loot Table | • Azeos's Feather (1–2, 100%) — used to craft Sky Armor and wings • Azeos armor set materials • Stellarite ore / gems |
| Gear Check | • Cavelight or Octarine armor set • Scarlett or Octarine ranged weapon • Lightning resistance potion • Swiftness potion for dodging • 20+ food, 15+ bandages |
| Arena Tip | Build walls to block the laser beam if it keeps hitting you. Create a wide, flat arena with no trees or obstacles that block your dodging routes. |
5. Omoroth the Sea Titan
| Stat | Detail |
|---|---|
| Biome | Sunken Sea |
| Summoning | Collect Omoroth's Pearl from chests or Sunken Sea enemies. Use 1 at Omoroth's Altar in the Sunken Sea biome. |
| HP | ~4,200 (scales with player count) |
| Attacks | • Water Jet — high-pressure water beam, pushes player back • Tidal Wave — large area sweep that covers half the arena • Ink Cloud — creates a dark cloud that blinds and slows • Summon Bubble — spawns floating bubbles that explode on contact • Phase 2 (below 40% HP) — water jets fire in patterns; arena becomes partially flooded |
| Strategy | Water-walking potions are essential. Keep moving laterally to dodge the Tidal Wave. Avoid ink clouds — they severely reduce visibility. Shoot the bubbles before they reach you. |
| Loot Table | • Omoroth's Scale (100%) — used to craft Ocean Armor and water-breathing gear • Omoroth armor set materials • Aquamarine gems / fishing loot |
| Gear Check | • Octarine or Galaxite armor set • High-damage ranged weapon (crossbow or rifle recommended) • Water-walking potions (mandatory) • Swiftness food • 20+ food, 15+ bandages |
| Arena Tip | Create a flat platform in the Sunken Sea with floor blocks. Remove all water from the fighting area if possible, but keep water-walking potions as backup. |
6. Ra-Akar the Sun Titan
| Stat | Detail |
|---|---|
| Biome | Desert of Beginnings (also known as Shimmering Frontier) |
| Summoning | Collect Solarite Crystal from Desert enemies and gems. Use 1 at Ra-Akar's Altar (large pyramid structure in the Desert). |
| HP | ~5,500 (scales with player count) |
| Attacks | • Solar Beam — thick laser beam that sweeps across the arena • Sand Storm — spinning sand vortex that pulls player toward it • Summon Sun Spawn — spawns fire-element minions • Ground Slam — area-of-effect stun attack • Phase 2 (below 33% HP) — two Solar Beams at once; sand storms persist longer |
| Strategy | This is a DPS and movement check fight. Stay on the move to avoid Solar Beams. Break line of sight around pillars for the beam. Kill Sun Spawns quickly — they heal the boss if left alive. |
| Loot Table | • Ra-Akar's Sun Jewel (100%) — used to craft Sun Armor and endgame weapons • Ra-Akar armor set materials • Solarite ore / gems • Endgame food recipes |
| Gear Check | • Galaxite armor set (minimum) • Solarite or Galaxite weapon (ranged preferred) • Heat/Fire resistance potions • Swiftness potions • 25+ food, 20+ bandages • Revival items for multiplayer |
| Arena Tip | Build a medium-sized arena with a few pillars for line-of-sight breaks against the Solar Beam. Keep the floor flat and unobstructed. |
7. The Destroyer (Endgame Boss)
| Stat | Detail |
|---|---|
| Biome | The Forge (endgame area, accessed through the Core) |
| Summoning | Collect the Core Key fragments from all 3 titans (Azeos, Omoroth, Ra-Akar). Combine at the Core Terminal in The Forge. |
| HP | ~8,000+ (scales significantly with player count) |
| Attacks | • Core Beam — massive laser that rotates around the arena • Orbital Strike — calls down energy orbs from above • Void Pulse — expanding ring of energy that knocks players back • Summon Core Minions — spawns high-damage minions from portals • Phase 2 (below 60% HP) — two Core Beams rotating in opposite directions • Phase 3 (below 25% HP) — all attacks active simultaneously; arena shrinks |
| Strategy | Multi-phase endurance fight. Phase 1 is learnable — focus on dodging the beam. Phase 2 requires constant movement between beams. Phase 3 is a burn phase — use all buffs and healing items. Coordinate roles in multiplayer. |
| Loot Table | • Core Shard (100%) — used to craft Core Armor and postgame gear • Destroyer armor set materials • Endgame gems and soul items • Cosmetic items / pets |
| Gear Check | • Solarite or Core armor set (full set mandatory) • Best weapon available (preferably with range) • Max HP and Defense food buffs • All resistance potions • 30+ food, 25+ bandages • Revival totems for multiplayer |
| Arena Tip | The Destroyer's arena is fixed — you cannot modify it. Learn the timing of the Core Beam rotation. Stay near the center in Phase 1, shift to the edges between beams in Phase 2. |
Optional Boss: Ivy the Poisonous Mass
| Stat | Detail |
|---|---|
| Biome | Hive Larva Biome (Passage) |
| Summoning | Find Ivy's Cocoon in the Hive tunnels. Attack it to release the boss. |
| HP | ~1,800 (scales with player count) |
| Attacks | • Poison Spit — launches a glob of poison that creates an acid pool • Summon Larva — spawns small larva adds • Tendril Whip — melee-range vine sweep • Phase 2 (below 50% HP) — arena floor partially covered in acid pools |
| Strategy | Clear adds immediately. Stay out of acid pools. Use ranged attacks. Poison resistance is helpful but not mandatory at this stage. |
| Loot Table | • Spore Sac (100%) — used to craft poison-related items • Ivy Carapace armor materials • Larva meat for cooking |
| Gear Check | • Iron armor set • Basic ranged weapon • Poison resistance potion (recommended) • 10+ food, 5+ bandages |
| Arena Tip | Fight in a cleared tunnel section. The boss arena does not need much preparation as long as you have an escape route from acid pools. |
Gear Checklist by Boss
Before each boss, ensure you have the following:
Glurch
- [ ] Copper armor set
- [ ] Copper bow or Slingshot
- [ ] 5+ bandages
- [ ] Pickaxe (for escape)
Ghorm
- [ ] Tin armor set (or higher)
- [ ] Iron bow or Musket
- [ ] 10+ food items
- [ ] Torches / lighting
Malugaz
- [ ] Iron armor set
- [ ] Iron ranged weapon
- [ ] Fire resistance potion
- [ ] 15+ food, 10+ bandages
Azeos
- [ ] Cavelight / Octarine armor
- [ ] Scarlett / Octarine ranged weapon
- [ ] Lightning resistance + swiftness potions
- [ ] 20+ food, 15+ bandages
Omoroth
- [ ] Octarine / Galaxite armor
- [ ] Crossbow or Rifle
- [ ] Water-walking potions (mandatory)
- [ ] 20+ food, 15+ bandages
Ra-Akar
- [ ] Galaxite armor set
- [ ] Solarite / Galaxite weapon
- [ ] Heat resistance + swiftness potions
- [ ] 25+ food, 20+ bandages
The Destroyer
- [ ] Solarite / Core armor set
- [ ] Best ranged weapon available
- [ ] All resistance potions
- [ ] Max HP + Defense food buffs
- [ ] 30+ food, 25+ bandages
- [ ] Revival totems (multiplayer)
General Boss-Fighting Tips
- Arena Preparation — Clear every boss arena of debris, blocks, and uneven terrain before summoning. A flat, well-lit arena saves lives.
- Ranged Over Melee — Every boss in Core Keeper is easier with ranged weapons. Keep your distance.
- Food Buffing — Cooked food provides significant stat bonuses. Always eat your best food before a boss fight.
- Multiplayer Scaling — Boss HP increases by approximately 60–80% per additional player. Adjust your strategy accordingly.
- Spawn Point — Place a bed near the boss arena before fighting. If you die, you respawn close by.
- Adds First — When a boss summons minions, kill them immediately before resuming boss damage.
- Potions Don't Stack — Potion effects overwrite each other. Use one at a time for optimal coverage.
Data source: Core Keeper Wiki v1.0 — verified July 2026.
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