If you have a good team (of friends no less) its a really fun game. I have a group I play with all the time and as stated, its never the same game. We know where we think shit should happen and in theory we should get thru expert mode all green, but no... we are barely standing for nearly all the maps. This is avoiding exploits and such which kinda detract from the fun. Alone, the game's pretty boring I find... but with a set of good friends.. its all about the survival.