I disliked single player on them all, it was generic all around just like KZ2, CoW, Haze or any other FPS out there except for TimeShift imo.
Overall...
Halo: CE 5/5 freaking loved it, it invented tea bagging.
Halo 2 0/5 hated it.
Halo 3 3/5 it's alright, overpopular but fun.
Halo ODST 4/5 better then 2 and 3 but nothing beats the original, Reach might though.








