I loved the atmosphere of the game and the usage of the music tracks and lighting getting darker the deeper into the hospital you went. Even though there was only really one type of enemy it didn't bother me as they had a sort of evolution the deeper into the ground you went, giving a sort of progression feeling. The one thing I didn't like however was the escape sequence. That is probably one of the worst escape sequences I have ever seen. Super unfun to try to navigate through.
Other than the one gripe I would say I generally enjoyed this hack.