Nice! After a few tries I have been able to solve the first puzzle and made it to the second but there I was too slow and got caught again. Might give it another try after trying to the other submissions to see what the end is like if you win!
The first time the monster caught me from behind and I did not know really why I lost. Maybe adding a small cinematic at the end (force-turn the player in the monster direction with look_at for example) would be nice.
Did you make the wall textures yourselves as well? They look great!