Download and host a game of user-created levels. - BattleBlock Theater
In the Gift Shop, go to the Trading Post and trade with another player. - BattleBlock Theater
Play with the Behemoth or someone with this achievement in an online game. - BattleBlock Theater
58/1,54830/4003/30
6/2,1745/5001/36
478/2,806160/1,0005/28