Crush Combo! Trophy
Simultaneously crushed 4 enemies.
As with "Crusher", you'll need to perform the crush attack. For this trophy requirement however, you must perform a single crush attacks on 4 enemies before hitting the ground.
Your first chance at this, is in the level is in the fifth world Mystical Pique's level, Golly G. Golem. Simply make your way towards the first Hidden Cage room, and the opportunity basically provides itself. If you're not going for the Hidden Cages, you'll come across multiple chances throughout the game that pits you against 4 enemies at once that are beneath you anyways.