Unfinished Game, bullet casings get stuck under things and you can't get them out, even with the brush or power washer so you have to restart the level. the modern art level is ridiculous, running around for ages to find tiny items in the dark and the tables spawn in each other so you can't tell they're separate tables etc.
Sick of bugged games ruining any enjoyment you can get out of them. Don't release a game unless it's been thoroughly bug tested.