No reward for efforts?

This WAS fantastically addicting trying to get 3 stars in every level in story mode and challenge mode. I couldnt stop playing trying to accomplish it (the game would be very boring if you werent aiming for the high scores), and when I FINALLY completed that goal in story mode AND challenge mode ... Nothing happened.. The maker didnt provide even an achievement for getting 3 stars on everything. That was a slap in the face for a completionist like myself. So 4 stars not 5. There was neither a reward for story nor challenge mode...

Cyrustor about Mikey Shorts, v1.8