A good start, but I recommend that the player continues to face the last direction inputted instead of snapping back to facing forward. There's a weird glitch that causes the player's sprite to disappear after falling into a pit so I recommend fixing that. Finally, the health bar for the player is a bit odd since, in my case at least, it can't decide whether or not it becoming more or less red shows how much damage the player took.
Still pretty good though. I like it.
Never got to rate this game, but it is really fun to play. I can 100% tell this will be a big hit later.