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
Get a limited edition Sticker from Ock
Destroy all of Mormo's Anchors in a story
Complete an Offering
Equip a limited edition Sticker
Complete a Dojo
Defeat Mormo for the first time
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
Equip 12 limited edition Stickers
Upgrade your bomb capacity to maximum
Find all Toys of Legend
Find all of Ditto's History Logs
Break the Curse of Ditto