Very cool Downwell clone! I really liked the sprite work. Also the effect of stretching the character as you fall helps give a cool sense of speed as you fall.
Something I think the game could have benefited from would be a health system. Dying in one hit felt a little unforgiving at times since when falling really fast you have little time to react to hazards. I think being able to take an extra hit or two would help smooth this out.
Overall good work!