Turn all altars.

Turn an altar.

Read all of Bianca's journal entries.

Complete all cairns.

Complete a cairn.

Scare more than 10 chocos back to their burrow.

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

Complete the game.

Activate all frescos.

Activate a fresco.

Use the echo on a frozen ballast in Chapter 6.

Warm up the ballast in chapter 6.

Read all letters.

Read a letter.

Stop 25 pebbles with a single echo from the ballast.

Hug the ballast 20 times.

Hug the ballast.

Listen to all shells.

Listen to a shell.

Restore your stamina more than 50 times while climbing.

Place a piton at the top of a wall run.