TROPHY NAME -------------------- Peak of Regret
TROPHY DESCRIPTION ----- Turned into rooster.
This trophy can be achieved from 2 bosses in the game, they are much later in the game, and it's just a regular debuff skill that they can cast. I'll put them in the spoiler tags.
*** Spoiler - click to reveal ***One of the bosses, is the nightmare, which you've experienced before. You'll fight this enemy with three party members, including Kanata, in the fade realm, in pale tower, just infront of Lumina. It's a random debuff he can cast. He has a lot of HP, and barely hits, so you can definitely milk this fight out until he casts it.
The other one is Tung on the moon, but this is a slightly more annoying fight, so I don't recommend grinding it here, assuming it doesn't happen randomly, which is most likely will.
You can go to the fade realm and retry bosses, so this isn't missable.