The Trick on Infernal Hop is:
First, open the '?' treasures until you find a teleport ability. Once you get it, keep with you. When you see those breakable blocks, jump on them and go to the extreme left of the room, then use the jump panels to go near the race grid (behind the wall that separate you), then use the teleport... you should get the achievement without any difficunlt this way... =)
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Despiting the fact that I had to kill Waizer three times to get the Hard Badge, the game is a lot addicting on the beginning. The game was too repetitive.
Average Score : 2/5