Here is the full list of all 45 Moss: Book II achievements.
Discover your first Forgotten Fragment.
Restore one stained glass window.
Restore three stained glass windows.
Restore all of the stained glass windows.
Defeat the Keeper in the Conservatory.
Defeat the Warden in the Foundry.
Defeat the Owl Tylan in the Pinnacle.
Enter the Castle alongside Quill.
Enter the Sprite Realm alongside Quill.
Enter the Garden alongside Quill.
Enter the Conservatory alongside Quill.
Meet Sahima in the Mountains.
Enter the Depths alongside Sahima.
Enter the Foundry alongside Quill.
Ascend to the Pinnacle alongside Quill.
Acquire the Nature Attunement ability in the Sprite Realm.
Acquire the Sword Dash ability in the Conservatory.
Use the Charged Chakram ability in the Mountains.
Acquire Cariel's Hammer in the Foundry.
Enter your first Relic Shrine.
Enter the last Relic Shrine.
Defeat the Screechers on the way to the throne.
Use your power as a Reader to heal Quill for the first time.
Strike a Forged enemy twice with the same Charged Chakram attack.
Defeat three Forged enemies with a single Hammer Trap attack.
Defeat three Forged enemies with a single Sword Dash attack.
Destroy a Ticker with a controlled Ticker.
Knock a Screecher off a ledge.
Destroy a Scorcher with a controlled Scorcher.
Destroy a Forged enemy with a controlled Bomber.
Keep a controlled Ripper rolling continuously.
Destroy an Armored Screecher with a piston.
Use a controlled Forged enemy to block an attack.
Make Quill dizzy.
Give Quill a new look.
Charge Quill's weapon while in alternate gravity.
Discover a sealed door to another realm.
Destroy Forged enemies using each weapon in quick
Journey with Sahima without a single death.
Reunite with Quill.
Use your power as a Reader to break many objects.
Use Quill's sword to cut down a lot of grass.
Collect half of the Relic Dust.
Collect all of the Relic Dust.
Finish the second book of Moss.