Effects:

Stunned creatures are unable to act or move. Certain creatures with channeled attacks, such as Praetorian acid spit, will be interrupted by stuns. Dwarves are normally immune to stun outside of some Creature attacks. In these cases, "Stunned" dwarves can still move and act but their speed is reduced by 50% for 1.5s.

Sources:

There are many sources of Stun available to Dwarves, they are listed below in order of % chance, then Duration.

Source Chance (%) Duration (s) Note
Satchel Charge 100 5 T4B upgrade only
BRT7 100 4 T5A upgrade only & all 3 shots must hit
Trapacactus 100 4
Breach Cutter 100 3 T4B upgrade only
Cryo Cannon 100 3 Spear hit from "Ice Spear" OC only
Deepcore PGL 100 3 T4C Upgrade only
M1000 Classic 100 3 T5A upgrade only & must be a focus shot hit
Impact Axe 100 1.5
Subata 120 50 6 "Tranquilizer Rounds" OC only
Bulldog Heavy Revolver 50 1.5
Cluster Grenade 50 1.5
Pickaxe Power Attack 50 1.5 Power Attack only
See You in Hell 33 15 Shockwave hit only
Jury Rigged Boomstick 30 2.5 Per Pellet, T3A upgrade increases chance to 50% and duration to 6s
Leadstorm Powered Minigun 20 1 T3B upgrade increases chance to 40% and duration to 3s, "Lead Storm" OC removes stun
Reinforced Power Drills 25 1
LMG Gun Platform 20 1.5 T3B upgrade only, or 100% chance if "Turret Whip" shot (Warthog T5A upgrade)
Warthog Auto 210 10 3 Per Pellet, Weakpoint hits only (unless "Stunner" OC), "Mini Shells" OC removes stun
Deepcore GK2 10 1.5 Weakpoint hits only, T4C upgrade increases % chance to 40%

Stun Resistance:

Some creatures have a "resistance" to stun. This means while they can still be stunned with the same % chance, the stun duration will be reduced. This stun resistance applies to all variants within a category unless specified.

Creature Category Modifier Stun Duration (s)
Normal 1.0 15 6 5 4 3 2.5 2 1.5 1
Praetorian, Spawners (from Dread only) 0.8 12 4.8 4 3.2 2.4 2 1.6 1.2 0.8
Mactera Spawn 0.7 10.5 4.2 3.5 2.8 2.1 1.75 1.4 1.05 0.7
Bomber 0.5 7.5 3 2.5 2 1.5 1.25 1 0.75 0.5
Hoarder 0.05 0.75 0.3 0.25 0.2 0.15 0.125 0.1 0.075 0.050
Immune 0 0 0 0 0 0 0 0 0 0

Stun Cooldown:

Some creatures have a cooldown (StaggerImmunityWindow in the gamefiles). This is a delay between possible stun triggers, which prevents them being stun-locked until death.

Creature Type Immunity Window (s)
Naedocyte Breeder 10
Glyphid Grunt Guard 2
Praetorian 2
Ebonite Praetorian 0
Spawner (from Dreadnaught) 2

Immunity:

Some creatures cannot be stunned, a large portion of neutral and stationary enemies cannot be stunned. Below is a list of Mobile Hostile Creatures Immune to Stun. If a base type of creature is immune, then all variants are also immune (i.e. Bulk Detonator & Crassus Detonator):

  • Ebonite Variants (all)
  • Flying Rocks
  • Glyphid Bulk Detonator
  • Glyphid Crassus Detonator
  • Glyphid Dreadnought
  • Glyphid Oppressor
  • Mactera Grabber
  • Naedocyte Breeder
  • Nayaka Trawler
  • Q'ronar Youngling
  • Q'ronar Shellback
  • Xynarch Charge-Sucker
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