This game is one of my favorite co-op games of all-time. I have played through the campaign multiple times with different partners, and it's always been a thrill each time. I think that's a testament to the solidity of the gameplay. The story is kinda ho-hum. Just saving humanity from certain destruction, ya know, the usual. Just another day for Delta Squad. Fantastic dialogue if you're a fan of one-liners. "Did you hear that?" "That's just the wind." "Yeah, right, since when does the wind whisper HOSTILES!"