I love game like binding of isaac, I noticed your inspiration right there. The concept is really good, fits the theme. It was actually one of my first ideas to the game jam and you made a good work implementing this!
However, it needs to be polished, sometimes I spawn right next to enemies, some other there is no doors on the block I spawn.
And I also don't know how to open doors, there is no enemies at all alive and still locked in the cube!
Overall is a cool game with a cool idea but consider fixing more bugs in a future update! Nice job friend.
Also, check my game if you can, you would like it! Leave it a comment and a rating as well!