1 player is so buggy it almost unplayable-- Multiplayer is also buggy- but also REALLY poorly created and serviced.
Multiplayer is just bad. Getting into a game is PAINFUL and slow- maybe even unconstitutional (cruel and unusal). IF you get a game you want you may get bugged out of it and dropped or QUITTERS may kill your game because they are losing. The experience/weapon earning system is week and really just penalizes casual players rewarding 12 year olds. Game lag in internet play creates frustraiting play with lag shielding and suprise deaths.
Far Cry 2 is a FAR CRY from the first game and just not that much fun.