Great game, nice concept, and good design on thinking the rooms though. There is 1 weird bug I did encounter at the time, which was in room An Architect's First Design. For some odd reason the first nasty monster kept killing me when I just simply walked by him. I reloaded the game and it didn't do that anymore.
The game is nice. However there are some bad design flaws. For example, lvl 17 takes a painfully long time to wait before you complete it, after you've done the correct solution.
I'm actually a bit disgusted by the amount of unnecessary and unneeded negativity for this game. Just because you can't figure out a puzzle doesn't automatically mean it sucks.
I would give this game a 5/5 if it wasn't for the game breaking warping glitch. I've noticed that after Day 10 it does that when you move an elevator. It constantly sticks the guy to the right of the floor he's currently on, and there's no way to fix that issue through player interaction.