Here is the full list of all 32 Miraculous: Rise of the Sphinx achievements.
You have defeated Mr. Pigeon... again!
You have searched the prologue from top to bottom.
You have completed the Prologue in Akuma mode.
Soundwave is reasoned, everything is much calmer now.
You have searched level 1 from top to bottom.
You have completed level 1 in Akuma mode.
You have defeated Weredad and his paper mountains.
You have searched level 2 from top to bottom.
You have completed level 2 in Akuma mode.
You beat Gamer 3.0 at its own game.
You have searched level 3 from top to bottom.
You have completed level 3 in Akuma mode.
Clonika and her clones are now only a bad memory.
You have searched level 4 from top to bottom.
You have completed level 4 in Akuma mode.
You have found the sentimonster and... Mayura!?
You have searched level 5 from top to bottom.
You have completed level 5 in Akuma mode.
You have saved Paris from the Machiavellian plans of Hawk Moth.
You have searched level 6 from top to bottom.
You have completed level 6 in Akuma mode.
Buy an upgrade from Master Fu
Buy all upgrades for Ladybug
Buy all upgrades for Cat Noir
Buy a treasure at the Kwami Shop
Buy all the treasures at the Kwami Boutique
Finishing a first friendship dialogue
BFF with Alya
BFF with Nino
BFF with Kagami
BFF with Luka
Very special moment with Adrien