Nice idea & well made - I enjoyed it!
The WASD and Cursor & Space combo was quite hard to get used to for me... I think it would've been better (speaking personally here...) that when pressing down on the cursor keys it would attack, instead of it being on space and having the direction separate...
Still enjoyable game once you get used to it, quite hard though, I think it could've had a few extra rooms at the start with perhaps just one enemy to ease you in.
Great job! :)