At first I liked the sound but at some point it was a bit too much.
The is simple and nice. I found the way we control the character interesting, even though I am clearly not skilled enough to go too far haha. I didn't get far but stopped at a level where I couldn't see the chest for some reason. I was not sure if it was by design, but the red blocks were in a stair like shape, I passed them and kept going down without seeing the chest but I appeared to grab it anyway. I died in my way back up... ^^
Was still fun though. And the idea is cool :)
Great work!