Very good color palette. That vibrant red really stands out against all the dark, cool blue-gray shades. The enemies feel very sinister.
Unfortunately, I was not able to get very far. I picked up this bright red thing, and then couldn't get past this wall.
Also, it was not clear to me what happens (thematically) in those segments where the player becomes invisible except for the eyes.
Finally, I too experienced the event where an enemy smacked me so hard that I got tossed outside the level's collision and fell to infinity.