Thanks, I'm behind the art and idea for the game so that makes me happy :D you don't seem to be the only one who's has that bug, but it may be a hardware issue, not sure, but I have people who've played through to the end of the game with no problems, so might be... Sorry that it happened to you, but you didn't miss much! The upgrades are the same options for both bosses so I think you can imagine how it would play out. Hope you had a good enough experience :)