BossCaelidChanged in 1 patchVerified on build 25080141

Starscourge Radahn

9,572 HP at Caelid · Starscourge Radahn, with the area's scaling applied. It takes the most damage from Pierce and the least from Holy.

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
Caelid · Starscourge Radahn	9,572	200	×3.703

Damage negation

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

Standard10%

Slash10%

Strike10%

Pierce0%

Magic20%

Fire20%

Lightning20%

Holy40%

Flat defense

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

Physical113

Magic113

Fire113

Lightning113

Holy113

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	335	433	723	1,180
Scarlet Rot	244	286	384	674
Bleed	335	433	723	1,180
Frost	335	433	723	1,180
Sleep	548	838	1,295	1,295
Madness	Immune
Death Blight	Immune

HP in each journey

At Caelid · Starscourge Radahn: 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
9,572	12,405	13,646	14,266	14,886	16,127	16,747	17,367

How its AI decides verified

Its attack choices change at 80%, 50%, 20% 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 2.5 m, 5 m, 10 m, 20 m, 25 m, 30 m, 40 m, 60 m, 80 m.
It chooses among 28 attack routines; 21 have a cooldown (1–30 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 Starscourge Radahn 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 Starscourge Radahn

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
- HP2,298→2,585
- Standard negation20%→10%
- Slash negation20%→10%
- Strike negation20%→10%