Here is the full list of all 20 The Swords of Ditto achievements.
Defeat Mormo with all of her Anchors active
Reverse time by a day
Find all Toys of Legend
Upgrade your bomb capacity to maximum
Break the Curse of Ditto
Equip 12 limited edition Stickers
Find all of Ditto's History Logs
Complete an Offering
Get a limited edition Sticker from Ock
Open a crate
Complete a Dojo
Equip a limited edition Sticker
Defeat Mormo for the first time
Swap a Sticker with someone on Ditto
Destroy all of Mormo's Anchors in a story
Destroy one of Mormo's Anchors
Find a Toy of Legend
Meet Serendipity
Equip a Sticker
Visit the grave of a failed Sword of Ditto