BossMountaintops of the GiantsChanged in 1 patchVerified on build 25080141

Borealis the Freezing Fog

11,268 HP at Mountaintops of the Giants · Spiritcaller Cave, with the area's scaling applied. It takes the most damage from Strike and the least from Slash.

Where you fight it 1

Each place uses its own copy of the boss with that area's scaling. HP and stance as you meet them (first phase, offline, no new game plus).

Place	HP	Stance	Scaling
Mountaintops of the Giants · Spiritcaller Cave	11,268	120	×6.875

Damage negation

How much of each damage type it shrugs off. Lower is better for you; the type it takes most is highlighted.

Standard35%

Slash80%

Strike10%

Pierce80%

Magic40%

Fire40%

Lightning40%

Holy40%

Flat defense

Subtracted from each hit before negation; it matters most for weak hits. Area scaling raises it along with HP.

Physical120

Magic120

Fire120

Lightning120

Holy120

Status buildup to proc

Buildup needed for the first proc, and how much more each following proc needs (it grows after every proc, up to the fifth).

Status	1st proc	2nd	3rd	4th
Poison	601	891	1,348	1,348
Scarlet Rot	601	891	1,348	1,348
Bleed	601	891	1,348	1,348
Frost	1,293	1,750	1,750	1,750
Sleep	Immune
Madness	Immune
Death Blight	Immune

HP in each journey

At Mountaintops of the Giants · Spiritcaller Cave: new game plus multiplies HP, defense and resistances again on top of the area's scaling.

NG	NG+1	NG+2	NG+3	NG+4	NG+5	NG+6	NG+7
11,268	11,437	12,580	13,152	13,724	14,868	15,440	16,012

How its AI decides verified

Its attack choices change at 70% of its HP: some attacks unlock, get likelier or are forced below those points.
It picks attacks by how far you are, with cut-offs at 5 m, 10 m, 20 m, 30 m, 40 m, 50 m.
It chooses among 28 attack routines; 19 have a cooldown (10–40 s).

Read from the game's AI script for this boss. Which animation each routine plays isn't named yet.

Kill-speed simulator New

How many hits Borealis the Freezing Fog takes with your weapon and stats, in any journey: damage per hit through its defense and negations, stance, and status procs as its thresholds grow.

Simulate Borealis the Freezing Fog

Patch history 1

Every patch that changed its numbers, read from the game's balance file (regulation) of each version.

1.02.1from 1.00
- HP1,513→1,639
- Standard negation40%→35%
- Strike negation40%→10%