Quote (gaby444 @ Feb 27 2015 02:53pm)
Play 30 minutes as each class.
Flip a map. Basically get to wave 25.
Flip a map twice. Basically get to wave 50.
But it's like you get to 25 then restarts at one again but gets a little bit harder.
And there's maybe another one that I can't remember.
I might be down to do that this next week. I played it once and got to like wave 13 lol.