In this world you will collect a mutant named Spike . He is useful once you have leveled him up. To level up Spike, use him either in every level you play or just in the star level you get. This is a bonus level where you can upgrade Spike or just get a new one once he dies. Make sure you have the Spike costume. It allows you to upgrade him faster. At a level 2 Spike you can face the Boss. The boss is actually a level 3 Spike. Make sure you have the magician suit. That suit will increase your mojo or strength. To defeat the Boss, tap the touch screen to get your mojo going with Spike. Scratch the boss a few times, then press R + Y to power hit him with a special move. After that he should be dead and you will get a gem.