I love this concept. This has so much potential! I come for the tetris but stay for the brain busting puzzle! Don't take this post as a sign that I didn't like the game. I really enjoyed playing and would like to see the game expanded. I loved the evolving enemies per floor and the lock mechanic for the stairs to the next room.
I have some problems that I as a player ran into. Please take the next few sentences as constructive feedback. It took me to my second try to actually read the directions that you need to connect to the yellow parts to have your character move. I also didn't understand why the 'attack' square was labeled as it is. When I saw attack I thought it meant that I would hit things harder. This might just be me but I think it would make sense more to make it a shield and call it such.
Again, thank you for the game.