I have a few issues with this (with all due respect of course):
1. I wasn't sure what I was suppose to do. I didn't even know that I could move to different areas, and continue to complete my quest.
2. Never start off your game with a bunch of text explaining the backstory. I mean, you can have that in your game. But don't explain what the story is, when I haven't been taught how to play the game.
3. A.I. tends to spawn at completely random spots in the level, that at least two times some of them spawned right on me.
4. This one ties with number two, but I was unfamiliar with the U.I., that I didn't even know that I had a health bar the whole time.
In a more positive note, I like the rogue-like style you were going with and the visuals do look nice. I just think the mechanics and A.I. need a bit more polishing.