This is Not Your War
A huge, two-bunker map. Each side has a team of locals. (Bobs, hunters, a jug.) PIck a side, go kill the other side. (With help, of course.) You'll get killed eventually, but it's pretty fun until you do. Can also be played net, but it gets a bit trickier to avoid getting killed by the locals...
Levels in map "This Is Not Your War":
This Is Not Your War