I think this is a fun game idea.
The way the levels are generated, I think, should be looked at: there were basically arrangements that couldn't be won. (sometimes an enemy was in front of me in a long corridor with no alternative route, one time the key was so far from the door I couldn't make it to the key and the door even without the monsters) SFX would be another good add.
I did get a win: scored 695. Nice job!