Very fun game! I really like the graphics and animations. Great job!
I like that there are upgrades, though I wish there were some more exciting ones, like attack range or movement speed. I only cared about vision range upgrade.
Depth 3 was bugged for me I think. The rooms were either completly empty or pitch black where I couldn't see my character. Sometimes I could only see him on the black backround with red light around him.