Very nice! I enjoyed the visuals and particles :) Most things run smoothly, except the sound stutters a bit sometimes.
The WASD controls were not that great in my experience. Often I got stuck onto the floor (sometimes even completely hidden underground in the first level). Personally, I found it hard to control the character accurately and having a "one hit kill" arrow shot with 4 archers was a bit demotivating. I did not manage to finish the game.