I've been spending a while on that slot machine thing, and I think that I'll spend a few more days on it. It's a complex attack and a complex skill in the same vein. Otherwise the boss fight is pretty straightforward, you shoot at FirstClass F while he tries to run away from you and you hope that the slot machine doesn't spell your doom!
Time spent on the project so far: 502 hours
Currently working on: Boss fight against FirstClass F
Animated screenshot after the jump: Slot machine!