Boss

Heart of the Mountain

Animations

Heart of the Mountain

Animation paused by your reduced-motion preference. Pick an animation to see it.

Stats

HP
26,000
Speed
34
Damage
60
Size
99.9
XP
300
Gold chance
100%
Threat
5 of 5
Attack every
2.6 s

Base game values. Difficulty, run time, co-op and events like the Blood Moon raise health and damage.

Behavior

Walks toward you and casts an attack every 2.6 s, always telegraphed on the ground. Below 30% health or after 90 s on the field it enrages: attacks twice as often and speed climbing up to 215.

When it appears

  • Crystal AbyssStage boss at 11:30

On-screen warningTHE HEART OF THE MOUNTAIN AWAKENS

Maps and stages

Health phases

Attacks

From the start

  • Rockfall

    Telegraph: Cross, then X

    A cross of stalactites falls centered on you; it also crushes common monsters.

    How to dodge: Exit diagonally, off the lines of the cross.

  • Geode

    Telegraph: Chasing mark

    A crystal grows over you and follows you for 2.5 s, locks and bursts 1 s later; it also hurts common monsters.

    How to dodge: When the geode locks, step out; you can drag it onto the horde.

  • Slam

    Telegraph: Circle on the ground

    A circular ground slam — step out of the ring.

    How to dodge: Leave the circle before the impact.

  • Charge

    Telegraph: Charge lane

    A fast charge that runs you over.

    How to dodge: Leave the lane before the dash and do not step on the trail it leaves.

Below 50% health · attacks 25% faster

  • Rockfall

    Telegraph: Cross, then X

    A cross of stalactites falls centered on you; it also crushes common monsters.

    How to dodge: Exit diagonally, off the lines of the cross.

  • Geode

    Telegraph: Chasing mark

    A crystal grows over you and follows you for 2.5 s, locks and bursts 1 s later; it also hurts common monsters.

    How to dodge: When the geode locks, step out; you can drag it onto the horde.

    Combo: Geode → Rockfall

  • Blackout

    Telegraph: Darkness

    The light flickers and the cave goes dark for 6 s; your torch shrinks by up to 30%. No damage.

    How to dodge: No damage: stay near the lights and watch what comes from the dark.

  • Slam

    Telegraph: Circle on the ground

    A circular ground slam — step out of the ring.

    How to dodge: Leave the circle before the impact.

  • Charge

    Telegraph: Charge lane

    A fast charge that runs you over.

    How to dodge: Leave the lane before the dash and do not step on the trail it leaves.

When it drops to 50% health

  • Harvest Moon

    Supreme Skill

    First a disk explodes around the boss, then a wide ring outside it. Stay away at first, then step in close.

Enrage: below 30% health or after 90 s on the field, it attacks twice as fast and speeds up.

Entrance

THE HEART OF THE MOUNTAIN AWAKENS

At 50% health it swaps its repertoire and casts 25% faster.

Execution

Executable below 8% health.

Once executable, it staggers for 2 s without moving or attacking, and its health holds at 1%. Get within 150 px and press Execute: a finishing blow, invulnerability, +25% health and +50 gold.

All about Execution →

Elements and resistances

No creature resists or is weak to any element: fire, ice, arcane and physical hurt the same.

Elites and bosses cannot be frozen or stunned by shock (shock becomes a 15% slow), and each stack of chill slows them only 4%. Bosses take only 12% of knockback.

Bestiary reward

This creature has no entry in the in-game bestiary yet.

How to face it

  1. Every attack is telegraphed on the ground: read the shape and leave before it closes. Keep a medium distance to see the next warning.
  2. At half health it stops, turns invulnerable for 1.2 s and unleashes its supreme attack: save your dash for that moment.
  3. The dash grants invulnerability: use it to cross warnings you cannot walk around in time.

See also