Thank you for playing and all the kind words! I admit, time was not forgiving to me in the playtesting regard. Just make sure to select the key in your inventory then interact with the door, it should open.
Happy to hear you liked the art, I'm planning to release it as an asset pack soon! I also agree that the game has potantial and I'd really love to implement all the things I have in mind for it and see where it goes, but now I may need some time to relax from that absolute mess of development that happenned in these 4 days lmao