Always do maximum damage to an opponent you've already hit.
"You're going on the list. I'm taking names!"
Unforgiving is an unlockable passive ability. The Trooper deals maximum damage to an enemy, which has already hit the trooper. A handy pick for a shock trooper armed with a shotgun or the Thompson due to their wide damage amplitudes.
Note, that official english description of this skill has a mistake due to mistranslation. So, it should read as "Always do maximum damage to an opponent, which has already hit you" instead official description "Always do maximum damage to an opponent you've already hit"