Sea of Solitude
22 Achievements
EA Play
Breakdown
Finished Level 3
How to unlock the Breakdown achievement in Sea of Solitude - Definitive Guide
At the end of Chapter 10 when you have melted all the Ice-bouys and swim up to Jack/Wolf without fur the achievement will pop.
Story-related and cannot be missed.
See below for more details:
At the end of Chapter 10, you will have to fight a boss. You defeat it by stealing shards from the smaller enemies circling it, then using the shard to melt giant ice blocks. Once all the blocks of ice are melted, run up to the monster to start a cutscene then the trophy will pop.