Got the basics there, and a pretty nice design (I like the rabbit character and the spiders and snakes), felt like from a collision point of view with wall floor blocks the rabbit was slightly offset (ie I could stand to the right of a floor tile and not fall... but I could be standing near the left hand side of a floor tile (But on it) and fall off, sort that out and you have a really good base to develop a more ambitious platformers/metroidvanias in the future!
nice job!