ToME: the Tales of Maj'Eyal

If doing the "Leave the level in set amount of turns", you can complete the quest by dying (if playing Adventure), since you get to the eidolon plane.

If doing the "Kill everything on the level" question, you will fail the quest by dying (if playing Adventure), since you leave the level and get to the eidolon plane.

I think the same thing happens with escorts, i.e. they think you changed level before they reach the goal once you die.

The same most certainly does not apply to escorts. I checked.