Wow! This was just wow! I loved every aspect of this game. It's incredible you could make this in such a short amount of time. The only oddity I noticed is that I could see through the gaps between wall elements. But that's basically it. Maybe on the long run you might want to replace the enemies with some juicy 3d contraptions. 'Cause you're gonna continue to develop this... right?
PS. Nice choice of music. I also loved DeusLower's Fantasy Medieval Mystery Ambient, and used it in one of my games. Though it's not mandatory, giving credit for assets is always nice. Let's share some love!