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 - 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 - A sim-only version of the weapon which differs only in health (essentially non-degrading).
It is found on a raider in the raid shack east of Bethesda ruins.
Has platform::Playstation 3Has platform::Xbox 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 Stabhappy's. 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. [已核实]