PlayStation Move Heroes

This trophy can be a little confusing because the Crystal Combo is not explained in the game anywhere, but basically the 2nd Player needs to collect a lot of crystals on the ground within a very short time (1-2 seconds). The Crystal Combo meter is in the lower right of the screen when you are playing in Team Play.

To make this much easier, I highly recommend going for this trophy at the beginning of Whipped Crème’ Brulee’, the Diamond Challenge in Paris. You'll need to walk up the hill at the beginning, kill a few enemies along the way, and then a forcefield will close behind you. Make sure Player 1 is facing the large amount of boxes on the little piece of land, then have Player 2 bump your PS Move Controller with theirs to do a Team Strike. The Team Strike will explode all the boxes in front of you (and kill all the enemies) as long as you're in the right spot. Just make sure to stay back enough with Player 1 so the diamonds don’t gravitate to him, and just let Player 2 collect all the diamonds quickly. I got a 40x Crystal Combo here fairly easy.