Nuclear Anomaly

Nuclear Anomaly is a perk in the Fallout 3 add-on Broken Steel.

Effects
With this perk, the Lone Wanderer will erupt into a devastating nuclear explosion similar to the explosion of a car or mini nuke whenever their health is reduced to 20 or less. Any allies in the vicinity will also suffer the effects of the blast.

Bugs
When playing on Normal difficulty and above, the player character can be killed by the explosion before the health regain activates. This makes the perk entirely useless at higher difficulties, as the perk merely kills the player character when their health reaches 20.