skirmish mode

man i really miss that mode... me and my 4 bros would all play together and kill a ton of aliens on that one level where you were in a canyon and it had a bunker. one bro would be a pred and run around disking them with the multi disk glitch and then the other bros and i would sit in the bunker blowing all that came up to us with smartguns and miniguns... bad@$$ game if you ask me haha