Once you get used to it, really fun!
The movement mechanic and class abilities are brilliant, multiplayer is heaps of fun, and it's a good challenge without being ridiculously hard/cheap about it.
Yeah the bots occasionally act like tards and run in to heal you while ignoring the guy shooting them in the face, but you can't expect the game to play itself, and if you play online you won't have that problem anyway.
It's not as amazing as I thought it would be, but it's still really fun and I'm glad I got it.