BossSpecimen StorehouseVerified on build 25080141

Messmer the Impaler

38,981 HP at Specimen Storehouse · Messmer's Dark Chamber, with the area's scaling applied. It takes the most damage from Slash and the least from Fire.

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HP (NG): 38,981
HP in NG+7: 62,154
Stance: 120
Weakest to: Slash 0%
Resists most: Fire 40%
Nearest grace: Messmer's Dark Chamber

How Messmer the Impaler fights

At Specimen Storehouse · Messmer's Dark Chamber, its toughest placement: 38,981 HP.

Phases by HP verified

At 90% HP or less: 2-hit slash combo (1) and 9-hit combo + projectile become available, up to 100× likelier than the rest.
At 40% HP or less: 2 projectiles (1) becomes available, up to 100× likelier than the rest.

Attacks from the game files

The attacks it picks on its own, most used first. Damage is the attack power of its strongest hit at this placement, before your defense and negation.

Attack	Parry	Block	Damage
Slash (1)1 hit · first hit after 1.8 s	Yes	Yes	1,144slash
2 projectiles (1)2 hits · first hit after 1.2 s · from 40% HP	No	Some hits	1,525physical
2-hit combo2 hits · first hit after 3.3 s	Yes	Yes	953slash
Grab1 hit · first hit after 1.8 s	No	No	3,9272,288 fire · 1,639 physical, if it catches you
Slash (2)1 hit · first hit after 1.0 s	Yes	Yes	1,144slash
9-hit combo + projectile10 hits · first hit after 2.1 s · from 90% HP	Hits 2, 3, 4, 5, 6, 7, 8, 9 and 10	Some hits	1,143762 slash · 381 fire
Thrust (1)1 hit · first hit after 0.8 s	Yes	Yes	762pierce
2-hit slash combo (1)2 hits · first hit after 1.3 s · from 90% HP	Yes	Yes	1,143762 slash · 381 fire
Thrust (2)1 hit · first hit after 0.8 s	Yes	Yes	762pierce
2-hit combo + 6 projectiles (1)8 hits · first hit after 0.6 s	Hits 2 and 8	Yes	1,143762 pierce · 381 fire
Projectile (1)1 hit · first hit after 1.6 s	No	Yes	1,143762 pierce · 381 fire
Slash + projectile (1)2 hits · first hit after 1.3 s	Hit 1	Yes	1,143762 slash · 381 fire
2-hit combo + 7 projectiles9 hits · first hit after 0.8 s	Hits 1 and 9	Yes	1,143762 slash · 381 fire
Slash (3)1 hit · first hit after 0.6 s	Yes	Yes	1,144slash
2-hit slash combo (2)2 hits · first hit after 0.6 s	Yes	Yes	572slash
2-hit thrust combo (1)2 hits · first hit after 1.0 s	Yes	Yes	572pierce
Projectile (2)1 hit · first hit after 1.0 s	No	Yes	762fire
2-hit combo + 8 projectiles10 hits · first hit after 0.9 s	Hits 3 and 10	Yes	1,143762 pierce · 381 fire
Thrust (3)1 hit · first hit after 1.2 s	Yes	Yes	1,144pierce

22 more attacks it chains after another one

Attack	Parry	Block	Damage
2-hit thrust combo (2)2 hits · first hit after 1.0 s · after 2-hit combo + 6 projectiles (2) and 2-hit combo + 6 projectiles (1) or 1 more	Yes	Yes	762572 pierce · 190 fire
Thrust (4)1 hit · first hit after 1.2 s · after 2-hit thrust combo (1)	Yes	Yes	1,144pierce
Slash (4)1 hit · first hit after 0.6 s · after 2-hit thrust combo (1)	Yes	Yes	1,144slash
2-hit combo + 6 projectiles (2)8 hits · first hit after 0.7 s · after Thrust (2) and Thrust (1)	Hits 1 and 8	Yes	1,143762 pierce · 381 fire
3-hit combo (1)3 hits · first hit after 0.6 s · after Slash + projectile (2) and 2-hit slash combo (1) or 2 more	Yes	Yes	1,334762 fire · 572 pierce
Slash + projectile (2)2 hits · first hit after 0.6 s · after Slash + projectile (1) and 2-hit slash combo (2) or 1 more	Hit 1	Yes	1,143762 slash · 381 fire
Slash + projectile (3)2 hits · first hit after 1.2 s · after 2-hit slash combo (2) and 2-hit slash combo (3)	Hit 1	Yes	1,143762 slash · 381 fire
Thrust (5)1 hit · first hit after 1.0 s · after 2-hit combo + 6 projectiles (2) and 2-hit combo + 6 projectiles (1) or 1 more	Yes	Yes	762pierce
Slash + projectile (4)2 hits · first hit after 0.8 s · after 2-hit slash combo (2) and Slash + projectile (2) or 1 more	Hit 2	Yes	1,143762 slash · 381 fire
3-hit combo (2)3 hits · first hit after 0.6 s · after 2-hit slash combo (1) and Slash + projectile (4) or 1 more	Yes	Yes	1,334762 fire · 572 pierce
Thrust (6)1 hit · first hit after 1.2 s · after 2-hit combo + 6 projectiles (2) and Thrust (5) or 2 more	Yes	Yes	1,334953 pierce · 381 fire
Slash + projectile (5)2 hits · first hit after 0.6 s · after 2-hit combo + 6 projectiles (2) and Thrust (2) or 3 more	Hit 1	Yes	1,143762 slash · 381 fire
2-hit slash combo (3)2 hits · first hit after 0.6 s	Yes	Yes	572slash
3-hit thrust combo3 hits · first hit after 1.5 s	Yes	Some hits	1,144572 pierce · 572 fire
2 projectiles (2)2 hits · first hit after 1.2 s	No	Some hits	1,525physical
Slash (5)1 hit · first hit after 1.8 s · after Thrust (6)	Yes	Yes	1,144slash
Slash (6)1 hit · first hit after 1.2 s · after Thrust (6)	Yes	Yes	1,144slash
Slash (7)1 hit · first hit after 1.8 s · after Slash + projectile (5)	Yes	Yes	1,144slash
Slash (8)1 hit · first hit after 1.0 s · after Slash + projectile (5)	Yes	Yes	1,144slash
Slash + projectile (6)2 hits · first hit after 1.1 s · after 2-hit combo + 6 projectiles (2) and 2-hit combo + 6 projectiles (1) or 1 more	Hit 1	Yes	1,143762 slash · 381 fire
Thrust (7)1 hit · first hit after 1.2 s · after 2-hit combo + 6 projectiles (2) and 2-hit combo + 6 projectiles (1) or 1 more	Yes	Yes	1,334953 pierce · 381 fire
2-hit thrust combo (3)2 hits · first hit after 1.0 s · after 2-hit slash combo (2) and 2-hit slash combo (3)	Yes	Yes	762572 pierce · 190 fire

Parry: whether a parry works on it (for combos, which hits). Block: whether a shield stops it; grabs go through.

Attack choice by distance from its battle script

How often it opens with each attack at each range, from its main weight tables (it switches between 8 sets of tables by state; the main one is shown).

under 2 m

2–4 m

4–6 m

6–8 m

8–10 m

10–15 m

15–25 m

25 m +

Slash (1)
2 projectiles (1)
2-hit combo
Grab
Slash (2)
Other attacks and moves

Show as a table

Distance	Most likely picks
under 2 m	Moving or other actions 32% · 2 projectiles (1) 31% · Slash (1) 20%
2–4 m	Moving or other actions 56% · 2 projectiles (1) 18% · Slash (1) 12%
4–6 m	Moving or other actions 40% · Slash (2) 23% · Slash (1) 11%
6–8 m	Moving or other actions 62% · Slash (1) 14% · 9-hit combo + projectile 7%
8–10 m	Moving or other actions 71% · Thrust (1) 9% · Grab 9%
10–15 m	Moving or other actions 74% · Thrust (1) 9% · Grab 9%
15–25 m	Moving or other actions 86% · Projectile (1) 9% · 2-hit slash combo (1) 5%
25 m +	Moving or other actions 55% · 2-hit combo 45%

Attacks: 41
With a cooldown: 26 8–60 s
Walk in before attacking: 1 from up to 10 m

What hurts it most

Slash0% +25%
Standard20%
Strike20% ±0
Pierce20% ±0
Magic20% ±0
Lightning20% ±0
Fire40% −25%
Holy40% −25%

Negation (lower lets more through), and how much more or less damage that type deals than Standard does.

Status procs to kill it

Status	1st proc	HP per proc	Procs to kill
Bleed	435	5,947	76,911 buildup
Frost	435	3,928	1010,751 buildup
Poison	435	3,086	1314,591 buildup
Scarlet Rot	435	7,665	65,631 buildup

From full HP with that status alone; thresholds grow after each proc. Frostbite's extra 20% damage taken isn't counted.

Weapons that hit it hardest

Attack rating that gets through its negations at max upgrade with every stat at 50, best affinity per weapon (flat defense left out). Try your own build in the build planner →

Attacks, their hits, parry and block, grabs and damage are read from the boss's animation events and attack data; when it picks them, from its battle script. Attack names follow the names players commonly use; the rest are described from their hits.

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
Specimen Storehouse · Messmer's Dark Chamber ×2	38,981	120	×13.156

Damage negation

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

Specimen Storehouse · Messmer's Dark Chamber

Standard20%

Slash0%

Strike20%

Pierce20%

Magic20%

Fire40%

Lightning20%

Holy40%

Specimen Storehouse · Messmer's Dark Chamber

Standard20%

Slash0%

Strike20%

Pierce20%

Magic20%

Fire40%

Lightning20%

Holy0%

Flat defense

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

Physical124

Magic124

Fire124

Lightning124

Holy124

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).

Specimen Storehouse · Messmer's Dark Chamber

Status	1st proc	2nd	3rd	4th
Poison	435	533	823	1,280
Scarlet Rot	435	533	823	1,280
Bleed	435	533	823	1,280
Frost	435	533	823	1,280
Sleep	Immune
Madness	Immune
Death Blight	Immune

Specimen Storehouse · Messmer's Dark Chamber

Status	1st proc	2nd	3rd	4th
Poison	435	533	823	1,280
Scarlet Rot	435	533	823	1,280
Bleed	435	533	823	1,280
Frost	316	358	456	746
Sleep	Immune
Madness	Immune
Death Blight	Immune

HP in each journey

At Specimen Storehouse · Messmer's Dark Chamber: 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
38,981	44,396	48,835	51,055	53,275	57,714	59,934	62,154

Kill-speed simulator New

How many hits Messmer the Impaler 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 Messmer the Impaler

How Messmer the Impaler fights

Phases by HP verified

Attacks from the game files

Attack choice by distance from its battle script

What hurts it most

Status procs to kill it

Weapons that hit it hardest

Where you fight it 1

Damage negation

Specimen Storehouse · Messmer's Dark Chamber

Specimen Storehouse · Messmer's Dark Chamber

Flat defense

Status buildup to proc

Specimen Storehouse · Messmer's Dark Chamber

Specimen Storehouse · Messmer's Dark Chamber

HP in each journey

Kill-speed simulator New

Other bosses in Specimen Storehouse