Really neat FPS dungeon crawler combo.
I found some bugs:
When you're dead you can click space to go upwards as if climbing a ladder, you noclip out of the ceiling and go into space =P
If an enemy is a few tiles away it seems you can spam-click faster than they move and thus override the turn-based timer, killing them before they can attack you even if they logically would have if you'd clicked once per turn.