Really great. Though in the Cavemen level, its unclear where to go towards the end. Except that really nice feel. Also, can you please tell how you coded that jump, if you did it in Unity?
Its actually pretty easy i just check if the player is on the floor and if he pressed space and then i add some upwards velocity. and every frame i subtract some speed so it goes down -> gravity. and i reset the vertical vel when im on the floor. hope i could help you.