Grim Reaper's Sprint

Grim Reaper's Sprint is a perk in Fallout 3 and Fallout: New Vegas.

Fallout 3
Landing a killing blow in V.A.T.S. will immediately restore all of your Action Points, allowing the player to begin a new series of attacks immediately. However, foes killed by allies (or other means) will not trigger the perk, even while in V.A.T.S.

Fallout: New Vegas
In Fallout: New Vegas, the perk only gives back 20 AP on a kill in V.A.T.S. Although this is a significant reduction to the effectiveness of the perk, the perk is still very useful with high power, low AP cost weapons. The effectiveness of Grim Reaper's Sprint is dependent upon three things: AP cost of the weapon, damage of the weapon, and toughness of the enemy.

The following perks and traits complement Grim Reaper's Sprint: Fast Shot, Kamikaze, Action Boy, Math Wrath, and Better Criticals.

Bugs

 * Sometimes upon taking this perk, it will not restore your AP. Instead, it just takes up a perk slot that could have otherwise been used on something else. I have tested this by reverting to a save before and choosing the perk 3 times. Each resulting in a wasted perk. Not sure what causes this and it seems to be on one character only.

Behind the scenes
The perk is a winner of Bethesda's Fallout anniversary contest, submitted by Marc-Andre Deslongchamps.

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