How to play against CPUs Offline
I have seen way too many questions on this topic, so therefore I am posting an universal answer.
To play against enemies on multiplayer, go to the game lobby options.
In those options, there should be a secondary option that asks if you want friends or enemies. If you want to play against enemies by yourself put 0 friends and up to 9 enemies. You can also put these enemies on whatever difficulty you want to put them on.
If you want people on your team just add up to 9 friends as well.
I hope you guys enjoy this hint.
Added by: KnockEmDead1996 Aug 2nd 2012, ID#8592