I went over to Henners's house last night and play 4-player split screen all night. So great! The challenges are kickin' my butt though... Currently stuck on 16 I think. Expert bots with no radar but they know EXACTLY where I am all the time...
Stupid Area 51 escape on Perfect Agent is annoying the crap out of me, always dying right at the end getting to that stupid door, apart from that, all good.. haven't even started the challenges yet!