Here's my playthrough of your game at the 6:43 mark of this video. 

I can't see Jack with everything so dark. Need more indicators of whether or not you hit something and the obstacles need to be a bit brighter and visible.

Cool idea! Love the Sleepy Hollow tie in and the art. Was confusing when getting hit. A marker when you get hit and a sound would help and having it look like you're actually slowing down when you get hit. Cool game loop though and I loved the art.

every time it will get better, well done!