Minecraft: PlayStation Vita Edition

All trophies in this DLC can be done solo with 2-4 gamepads, or by running 2-4 accounts on the console (then one gamepad will be enough). An open game requires 3 trophies: hitting a snowball while falling into lava, pushing 3 into lava with a snowball in a round and 25 snowballs into one, and the rest can be done not in an open game.

How to do it with 1 gamepad: open the required number of accounts and launch the game, then create a snowball game and after loading, press the square from all accounts in turn so that the round starts faster and no one has time to come to you (if you created an open game).

As for the rest, it seems to me that everything is clear from the description

As far as I remember, in snowball fights you can break blocks with your hand. Here you go...