- Timed Explosive Charge: 250+dmg (1 charge)
- Rocket Launcher(Rocket): 220dmg (*) (2 rockets)
- Satchel Charge: 70dmg (4 charges)
- Rocket Launcher(High Velocity Rocket): 51dmg (*) (5 rockets)
- 40mm HE Grenade: 28dmg (*) (9 grenades)
- Landmine: 20dmg (*)(~) (13 mines)
- Beancan Grenade(right click): 14dmg (!) (18 grenades)
- Beancan Grenade(left click): 12dmg (*) (21 grenades)
- Survey Charge: 6dmg (*) (42 charges)
- F1 Grenade(right click): 5dmg (*) (50 grenades)
- F1 Grenade(left click): 0.5dmg (500 grenades)
- Rocket Launcher(Incendiary Rocket): 0dmg (#)
! Can explode a moment after placing them.
* Inflicts splash damage to building parts.
~ Placement can be blocked by a tool cupboard.
# Causes a horrific amount of fire that spreads, although the ladder hatch is immune to fire damage.
- Mace: 0.25dmg (77 maces) 13 hits per weapon
- Bone Club: 0.06dmg (182 clubs) 23 hits per weapon
- Stone Spear: 0dmg
- Longsword: 0dmg
- Salvaged Cleaver: 0dmg
- Wooden Spear: 0dmg
- Salvaged Sword: 0dmg
- Machete: 0dmg
- Bone Knife: 0dmg
- Salvaged Hammer: 0.14dmg (26 hammers) 70 hits per tool
- Hatchet: 0.05dmg (76 hatchets) 66 hits per tool
- Rock: 0.05dmg (157 rocks) 32 hits per tool
- Stone Pickaxe: 0.034dmg (335 pickaxes) 22 hits per tool
- Stone Hatchet: 0.024dmg (401 hatchets) 26 hits per tool
- Torch: Negligible
- Torch(lit): Negligible
- Salvaged Icepick: 0dmg
- Pickaxe: 0dmg
- Salvaged Axe: 0dmg
- Jackhammer: 0dmg
- Spas-12: 0dmg
- Eoka Pistol: 0dmg
- Waterpipe Shotgun: 0dmg
- Double Barrel Shotgun: 0dmg
- Pump Action Shotgun: 0dmg
- Spas-12: 0dmg
- Eoka Pistol: 0dmg
- Waterpipe Shotgun: 0dmg
- Double Barrel Shotgun: 0dmg
- Pump Action Shotgun: 0dmg
- Eoka Pistol: 0.125dmg (2000 slugs)
- Waterpipe Shotgun: 0.125dmg (2000 slugs)
- Double Barrel Shotgun: 0.125dmg (2000 slugs)
- Pump Action Shotgun: 0.125dmg (2000 slugs)
- Spas-12: 0.05dmg (5000 slugs)
- Double Barrel Shotgun: 0dmg
- Eoka Pistol: 0dmg
- Pump Action Shotgun: 0dmg
- Spas-12: 0dmg
- Waterpipe Shotgun: 0dmg
- Bolt Action Rifle: 0dmg
- M249: 0dmg
- Assault Rifle: 0dmg
- LR-300: 0dmg
- Semi-Automatic Rifle: 0dmg
- Assault Rifle: 3.9dmg (65 rounds)
- Bolt Action Rifle: 3.9dmg (65 rounds)
- LR-300 Assault Rifle: 3.9dmg (65 rounds)
- M249: 3.9dmg (65 rounds)
- Semi-Automatic Rifle: 3.9dmg (65 rounds)
Notes:
Explosive rifle ammunition can start fires, but the ladder hatch is immune to fire damage.
- Bolt Action Rifle: 0dmg
- Assault Rifle: 0dmg
- LR-300 Assault Rifle: 0dmg
- M249: 0dmg
- Semi-Automatic Rifle: 0dmg
Notes:
Incendiary rifle ammunition can start fires, but the ladder hatch is immune to fire damage.
- Python Revolver: 0dmg
- MP5: 0dmg
- Thompson: 0dmg
- Semi-Automatic Pistol: 0dmg
- Custom SMG: 0dmg
- M92: 0dmg
- Revolver: 0dmg
- Python Revolver: 0dmg
- MP5: 0dmg
- Thompson: 0dmg
- Custom SMG: 0dmg
- Semi-Automatic Pistol: 0dmg
- Revolver: 0dmg
Notes:
Incendiary pistol bullets can start fires, but the ladder hatch is immune to fire damage.
- Flamethrower: 0dmg
- Chainsaw: 0dmg
Notes:
The flamethrower starts a fire after a burst of 13 fuel. The fire doesn’t inflict damage to ladder hatches.
- Bow(Bone Arrow): 0dmg
- Bow(Fire Arrow): 0dmg
- Bow(High Velocity Arrow): 0dmg
- Bow(Wooden Arrow): 0dmg
- Crossbow(Bone Arrow): 0dmg
- Crossbow(Fire Arrow): 0dmg
- Crossbow(High Velocity Arrow): 0dmg
- Crossbow(Wooden Arrow): 0dmg
- Nailgun(Nailgun Nails): 0dmg
An alternative method to getting through a ladder hatch would be to find a weaker way in. Destroying the floor frame will destroy the ladder hatch. If there’s no lock on the ladder hatch then you can open it and pick it up by holding the use button.