Thank you for playing! Was busy the last 24 hours before the end of the jam, had a new version where the character wouldn't slip max 1 sec deppending on it's current speed. Had bigger plans such as the background you mention however had 3 big problems which led to no time left for the visuals. Thanks also for noticed the music didn't loop.
This was my first jam and also my first 2d game from scratch which was a lot of fun and to hear other developers feedback like yours is encouraging. Will keep it all in mind for my next 2 overlapping jams. ✌
EDIT- Wonderful game you made, quite simpel yet so entertaining and bit difficult.