Testers needed.

Oh, I just saw your message now. Unfortunately, I don't have the saves anymore, as I managed to ruin all three autosaves, each time trying to bypass the game crash in the middle of the playthrough. Regarding remaking the mission, I'm not sure why the last mission shouldn't be overly challenging.
However, reducing the hero to level one definitely needs to be removed – it's not very logical, and it also eliminates the point of leveling up Andrias in the second mission (and spending money and time on a mentor, respectively).