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