2 Player co-op is what you call awesome on this game...
The graphics are great,and have some good detail,and the sound is very good,and the gameplay is just awesome,and the controls are really easy to use.
Also the single player is awesome,and fighting zombies makes it really fun.
And the multiplayer is great,and it is really fun to play on.
And this game is great because there are many levels you can do,and there are loads of zombies to fight,also there are diffarent zombies,some which are easy to kill,and some which can be very hard,and there are many weapons to use,and this game is also very funny,and it will make you laugh,because its just so much fun,and most of the levels are quite easy,but some can be quite hard.
And the 2 player is great,and it is really fun to play on 2 player,and its better,because if the zombies hurt you,then your team mate can come and help you.
Graphics:10/10
Sound:10/10
Gameplay:10/10
Single player:10/10
Multiplayer:10/10
Overall:10/10