Nice! Didn't realise it was like a runner game the first time I played it but was ok after that. Liked the player character model and his speech bubbles UngaBunga-ing through the cave.
Made it to the third level :D
If you continue working on this I'd take a look at the collision detection as it feels a little on the unfair side.
Bonus points for UngaBunga and spiky rocks :O