Well... It's not really BAD but the controls are kind of clumsy. I started by using the viking and his attacks never reached the foes, instead the foes hitted me and I didn't even got a chance to stop them. The ability controls are placed in a dumb place. You should have used the the keyboard letters "C, V, B, N or M since those are the closest to the space bar and they are more comfortable than "A, S and D"
But other than that, it's pretty decent.