Complete the first level

Use the mud tile for the first time

Redirect an acorn with a fallen log for the first time

Use the burrow for the first time

Use a burrow to slide an acorn into the mud

Reach level 20

Use undo 5 times in a single level

Complete level 10 without using undo

Push 15 acorns

Redirect 10 acorns using fallen logs

Use restart for the first time