Absolutely incredible game! The slow movement could be annoying at at times but it does wonders for the atmosphere and I honestly wouldn't change it by too much. What I would add is checkpoints - I quit after my first death because I was very far along the path to the final upgrade and being sent all the way back to the start was extremely demotivating. Atmosphere is definitely the game's strong suit, everything feels nice and creepy and even though the game wasn't all that difficult I still felt constantly vulnerable thanks to the slow movement. Overall, good job!