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