I really enjoyed this. It took me a bit to wrap my head around the controls, but once I did, I had a great time! The single player mode was fun, but I could see this being a blast with some friends!
My ONLY suggestion would be controls. I so desperately wanted to use my mouse button to aim and fire arrows. I was using WASD to move and jump, so having the mouse (along with space bar for preference) would be a nice addition.