I was really impressed by the randomization. I don't think most people are going to pick up on that. I just happened to have Avast close and reopen the game and I noticed the layout was different.
I think, as was stated before, it's a little easy. I think some of the rooms (particularly the last room) could use a little more randomization. The music was great and the sound effects were not bad, but the sound when you spam the attack button is pretty annoying.
Good effort! Hope you do more with it.