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