Defeat at least 4 enemies with Red and at least 4 enemies with Antea in a single encounter

Take your Oath

Find Antea

Obtain all trophies in the game.

Use the echo on a frozen ballast in Chapter 6.

Complete all cairns.

Listen to all shells.

Read all of Bianca's journal entries.

Complete more than 200 jumps or double jumps in one game.

Stop 25 pebbles with a single echo from the ballast.

Turn an altar.

Activate a fresco.