Really loved the concept of the game! Super atmospheric - the art and the music went together well.
I'd suggest two things 1) the controls were awfully floaty which made the movement much harder. 2) I didn't realize there was a button I needed to know for poison until I was on the level that required it. I tried to find the controls on the itch page, but it was only in-game. When I went back to the menu to find out about the controls, the game resets. Either list your controls outside the game or make it so you can read the controls while in any level.
Great work!