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