You have a very interesting mechanic here and an even more interesting art style. The levels not totally resetting on death felt like a bug but seems to be a required mechanic for the level with the key activated death pit. It's strange when resetting manually is usually required after resetting by death but not always. It's an interesting decision asking the player if they want their death to just teleport them or reset the level, and it's one I don't think I have seen a game ask before. Strangely enough, I think that is your game's most interesting mechanic; running through a level, dieing, then running through again with your previous life's changes still in effect. I know that's not what your game is focused on, but it's what I felt was most compelling about it.
Anyway, thanks for an intriguing game with an unsettling art style. I'm glad I played it.