Several achievements have failed to unlock (I'm falling-free falling) or unlocked late. I had to replay the 'destroy/save tower' mission multiple times before I nabbed both chevos.
A major glitch I have encountered is that when I start a mayhem or insurance fraud activity, the target money you have to hit is set at $0 so I just complete it without pressing a button. Makes it easy I guess but defies the point of playing.
Retail Games with 100% completion : 53
Arcade Games with 100% completion: 7
Currently looking to boost; Condemned 2, Crackdown co-op
Info for potential multiplayer pals; I am a UK brah so go by 'GMT'