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