Looks good, and I'm sure the concept would be more interesting if I could see more of it. 🙂
The guy with the spear killing you and sending you all the way back to the beginning of the game (as opposed to the beginning of the room) really put a hamper on willingness to go all the way back through again - especially when it's pretty unclear what to do in that room (because the S key is blurry and doesn't tell you what it does). Letting the player try the same problem again repeatedly more quickly would help them figure it out for themselves.
Sorry you ran out of time 😞.