Minecraft: PlayStation Vita Edition

The trophy is very strange, but can be easily done in a private match.
To do this, go to the Main Menu -> Mini-games -> "Dump" -> Game type: Snowballs (slider to the left), check the box next to "By invitations only".
As soon as you get to the lobby, immediately press Select, then and invite your friend.
We all press to start the game.
As soon as the game starts, the player who needs the trophy jumps into the lava for 2 rounds, and then the player who does NOT need the trophy jumps into the lava for 3 rounds.

Probably can be done in battle. invite 1 friend, connect a second player on your console (if not a controller, then invite 2 friends). When the game starts, let your friend (one of the two) kill you and the second player/friend 3 rounds. After 3 wins you must win 2 times in a row. The Crucible card is best, since it is easiest to drop into lava there.