You made it through an entire hostile area without so much as a squeak.

Played in a co-op game with either an employee of Gearbox or someone who had this trophy

Defeat enemies inside of a Devil Gate.

Meet Susano.

Return Kamiki Village back to normal.

Learn how to use Power Slash.

Defeat the nameless man and end his suffering.

You achieved the highest personal rank possible in multiplayer.

Deliver some medicine to a man in need.

Receive encouragement from a young lady.

Score at least 10,000,000 points in Ducks ReDux

You found a secret.