Here is the full list of all 47 BLACK CLOVER: QUARTET KNIGHTS achievements.
Unlock all Achievements
Clear all Challenge episodes
Clear all Story and Challenge Missions
Clear another Story
Clear the Story
Win a ranked Online Battle match while using Noelle.
Trained in Mock Battle for a while
DLC Achievement 7 Description
DLC Achievement 8 Description
Clear the Julius Challenge Episode.
Clear all Mission challenges in Julius's Challenge Episode.
Clear the Charlotte Challenge Episode.
Clear all Mission challenges in Charlotte's Challenge Episode.
Win a ranked Online Battle match while using Julius.
Win a ranked Online Battle match while using Fana.
Win a ranked Online Battle match while using Mars.
Win a ranked Online Battle match while using Charmy.
Win a ranked Online Battle match while using Charlotte.
Win a ranked Online Battle match while using Vanessa.
Win a ranked Online Battle match while using Klaus.
Win a ranked Online Battle match while using Mimosa.
Win 10 Online Battle Ranked Matches.
Win a ranked Online Battle match while using Licht.
Win a ranked Online Battle match while using Gauche.
Win a ranked Online Battle match while using Magna.
DLC Achievement 9 Description
First Voice change
First Magic Knight Rank Up
Win a ranked Online Battle match while using Yami (Young Ver.)
Win a ranked Online Battle match while using Vetto.
Win a ranked Online Battle match while using Luck.
Win a ranked Online Battle match while using Yami.
Win a ranked Online Battle match while using Asta.
First Film use
Used a voice line online for the first time
Played first Online Battle
Win a ranked Online Battle match while using Yuno.
Got a Magic Key in Treasure Hunt
First Title change
First Film change
First Player Icon change
First Outfit change
Checked Magic Details for the first time
Participated in Zone Control
First time getting a Team Relic
Participated in Crystal Carry
First Relic use