If I don't play for a while and then come back to this game, I always forget the game locks up if you level Veizer to 5 before anyone else.
Always messes up an attempt at finishing without any losses...
If you get the premium deal and try to upgrade Veizer to level 5 before anyone else (cause he's different, and Tristan is boring after a dozen plays, why wouldn't you?), it locks up the game.