They'll keep you going if you have all the characters but c'mon, fight 2000 matches with characters. Thats potentially 50 hours per character if you are a completionist!!! But free is free if you got the email.
Even 200 would have been too many lol
Grind achievements how unoriginal... Why not something Kinect 2.0-centric e.g "Squatters Rights 20GS" win 12 fights whilst physically doing squats (Kinect will know if you try and cheat)
Going way over the top now...
Damn, I thought you meant 2000 matches with all characters, which would have been a bit much on its own, but 2000 per character?!?