This trophy is buggy.
Normally this trophy is not missable cause you need to defeat the Kraken and the Sisters of Fate to progress further. But if you quit playing after you beat the Kraken before you defeat the last sister of fate the trophy will glitch and it won't unlock. For it not to glitch out you need to beat them in one sitting (you can die but you can't quit the game or go back to the main menu).
For some reason it's not bugged in the bonus play through (if you beat the game for the first time you can do a bonus play through.
There is also a workaround on ps3t.org to unglitch the trophy;http://www.ps3trophies.org/forum/god-war-ii/40814-god-war-co...
Edit: This trophy is buggy on both the ps3 and ps vita.