Defeat Pollux
Story related. Cannot be missed.
Will unlock in Chapter 12: The Oracle's Chamber.


In Chapter 12 you will reach the Oracles Chamber and run into the Oracles guard, Pollux. He will attempt to stop you from meeting the Oracle and a chase will ensue on a long bridge. You will have to avoid the crumbling floor and repeatedly grapple to make it to the end. Once you do you will finally be able to battle Pollux.

This is by far the hardest fight up to this point in the game. It consists of 6 phases that luckily have checkpoints in between them. On Hard difficulty it can become a test of willpower and patience, so dont give up. Defeat him and the trophy will unlock.