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