In an original Hackmaster campaign, I missed one session. The other players decided that for that session my cleric would be the scout and the fighter and ranger would only fight from the rear with bows and arrows. So my cleric died. My next character was a half-orc barbarian.
In Hackmaster, the duration of a barbarian's rage was based off of how many hit points of damage he had to do. I rolled three or four natural 20's in a row and ended up killing over 80 kobolds. Technically, I think my character had to do over 2000 hp of damage before his rage would end. The other PC's ran, as a raging barbarian always attacked whomever was closest--and I had nearly killed one PC before wading into the kobold scrum.
After that, my character had to rage quietly for an hour or two, game-time, before his rage subsided. Then the other PC's unlocked the door and helped me loot the kobold bodies.