Adrenaline Rush

Adrenaline Rush is a perk in Fallout 2 and Fallout Tactics. It was also a skill that was to appear in the canceled Fallout: Brotherhood of Steel 2.

Fallout: Brotherhood of Steel 2
When HP drops below 40% Melee attacks do more damage.

Behind the scenes
The perk Nerd Rage! is similar to Adrenaline Rush, and uses a variation of the image.