Obtain all trophies in the game.
Read all letters.
Complete a cairn.
Activate a fresco.
Complete the game.
Place a piton at the top of a wall run.
Complete more than 200 jumps or double jumps in one game.
Scare more than 10 chocos back to their burrow.
Restore your stamina more than 50 times while climbing.
Hug the ballast.
Hug the ballast 20 times.
Stop 25 pebbles with a single echo from the ballast.
Read all of Bianca's journal entries.
Use the echo on a frozen ballast in Chapter 6.
Warm up the ballast in chapter 6.
Listen to all shells.
Turn all altars.
Activate all frescos.
Complete all cairns.
Read a letter.
Turn an altar.
Listen to a shell.