3 on 3 NHL Arcade

To get this trophy you need to check a player so that he flips over the boards and out of the rink. The easiest way to get this is if you have two controllers. Make the other team get the puck. Automatically the second controller will switch to the player with the puck. As the player is just standing there with the puck you can run into him to move him. Move him next to the low part of the wall on the sides of the rink. Step back a little bit and charge at the player. Check him and he will flip over the wall. You can also do this by yourself playing in a game against the computer it will just be harder as they don't always get near the boards.