This game is pretty funny. A simple survive until you lose game which can be really fun when done right, and I would say it is mostly done right. The Grandmas look tight, the polish with the announcer yelling "Ultra-kill" and such is a great touch, and the controls work tight and well.
It's expected, but Unreal really helps make a game look pretty. These models and rooms look very nice and even professional in some areas. A solid game overall, but the only problem for me was it didn't run super smoothly (Although that's probably my machine cause it isn't very good). I'm happy to have played it and it's an awesome game for being made so quickly.