Good job getting in some of the classic platformer mechanics, including a double jump and wall climb. The atmosphere was nice and creepy, perfect for a dungeon story. Since this game relies on a plot twist with a nice development in the middle, you might give a mysterious hint at the beginning that there is something odd about the monster, just so that the player can nod at the end with the final reveal. The game has a few traps that are hard to anticipate the first time through, so a "peek down" feature where the camera dips briefly could be a nice addition. Some of the props like the crates were interactable, so I really wanted to drink from those bottles--could be something to add for future development. Great work!