Really enjoyed my time with this game! The intro section hooked me right up and the final jump to the ending is very satisfying. The controls feel polished and easy to learn. The small and simple map size prevented me from getting lost and made the flow of the game feel smoother. I like the use of light rays and green plants that pops right out in the dull, earthly environment. The water reflection shader is pretty cool too.
One small criticism I have is that the bats and falling rocks blends a little too well in the environment and is a little hard to spot, though it didn't really frustrate me since the game is short. If I am to nitpick, I would also suggest that the waterfall audio source to not be fully 3d so that the sound does not immediately 'snaps' to my other ear when passing through it.
Great job on the game!