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Fallout Wiki

Stabhappy is a unique combat knife in Fallout 3.


With its low AP requirement of 17, a player with high Agility can deliver a good deal of damage with only a single round of V.A.T.S. By combining Luck, Finesse and the Ninja perk in various ways, Stabhappy will critical strike 100% of the time. The weapon also damages limbs at a slightly increased rate.


  • Combat knife - The standard variant.
  • Occam's Razor - A slightly stronger version of the regular combat knife, though it is less effective than Stabhappy. It is wielded by Talon Commander Jabsco.
  • Trench knife Operation: Anchorage (add-on) - The trench knife's stats are identical to the regular combat knife. The only difference is a unique "knuckle-duster" skin.
  • Sim version combat knife Operation: Anchorage (add-on) - A sim-only version of the combat knife which differs only in health (essentially non-degrading).
  • Sim version trench knife Operation: Anchorage (add-on) - A sim-only version of the trench knife which differs only in health (essentially non-degrading).


Weapon name (current weapon is highlighted)- Weapon name (melee or unarmed)Attacks in V.A.T.S.- Attacks in V.A.T.S.
Weapon name (current weapon is highlighted)- Weapon name (gun, energy or explosive)Action point cost- Action point cost
Damage per attack (damage per projectile)- Damage per attack (damage per projectile)Damage per action point- Damage per action point
Damage per second- Damage per secondWeapon spread- Weapon spread
Area of effect damage- Area of effect damageMagazine capacity (shots per reload)- Magazine capacity (shots per reload)
Effect damage & duration- Effect damage & durationDurability (number of attacks before breaking)- Durability (number of attacks before breaking)
Bonus effects- Bonus effectsWeight- Weight
Attacks per second- Attacks per secondValue in caps- Value in caps
Critical chance % multiplier- Critical chance % multiplierValue to weight ratio- Value to weight ratio
Critical damage- Critical damageSkill required- Skill required
Critical effect damage & duration- Critical effect damage & durationStrength required- Strength required
With all mods attached- With all mods attached
Weapon name (current weapon is highlighted)Damage per attack (damage per projectile)Damage per secondAttacks per secondCritical Chance % multiplierCritical damageAction Point costDamage per action pointDurability (number of attacks before breaking)WeightValue in capsValue to weight ratio
Combat knife 7
Occam's Razor 10
Stabhappy 10
Trench knife Operation: Anchorage (add-on)7
Note: Melee damage is doubled in V.A.T.S.



Playstation 3Playstation 3 Xbox 360Xbox 360 The raiders inside and outside the shack (including the one which carries the Stabhappy) respawn every 72 hours, allowing the player an unlimited supply of Stabhappys. This is not so much a bug, but more of an re-spawning flag oversight by a programmer. The game functions properly, though possibly not as the programmer intended. [verified]