I don't know how I feel about the game. At first I thought it was interesting and expecting a good story but the ending I felt was kind of abrupt. I was expecting a puzzle platformer but the puzzles were very short and simplistic. I feel as though the game didn't need the death mechanic, it feels like it was put in as an afterthought for the games theme. I don't know if the game had another ending that you could get with less deaths, but I don't think the gameplay warranted a 2nd playthrough.
On the plus side of things you did take the opportunity to juice up the platforming, the squishy character felt very good to control, I didn't mind the momentum that much, and the graphics look very nice. You took some time making some nice atmosphere.