Game 98: Paladin (1988) by Omnitrend
A turn-based strategy RPG that forces you to finish the quest you started.
You see, the game (and its expansions) consists of individual scenarios. Starting one immediately deletes your character's data from the hard disk and the only way of getting it back is by completing that quest.
Should your Paladin survive then he will improve his stats for the next one. Can't do it? Then it's off to the included quest editor to make a new one.