Here is the full list of all 76 Library Of Ruina achievements.
Use 4 pages generated by the Abnormality page 'Rake' during a single reception on the Floor of Social Sciences.
Defeat 5 guests marked by the Abnormality page 'Request' in a single reception on the Floor of Technological Sciences.
Angela was snubbed. Roland could not forgive her.
Finish the final reception without any participant being incapacitated.
Roland was rejected. Angela could not forgive him.
Defeat the Purple Tear as Roland.
Defeat the Red Mist as Gebura.
Complete a Star of the City-level or above reception after selecting the Abnormality page 'Mountain of Corpses' on the Floor of Language.
Collect all Key Pages.
Roland and Angela chose to forgive each other.
Collect all Combat Pages.
Complete the reception of the Distorted Reverb Ensemble.
Activate the ability of the Abnormality page 'The Beast' on the Floor of Philosophy.
Fully realized the Floor of General Works.
Complete the reception of the Black Silence.
Complete the reception of the Reverberation Ensemble.
Defeat Olivier and Argalia using the Combat Page 'Furioso'.
Use the Combat Page 'Ever-repeating Performance' on a Scene where a guest planned to use a Mass Attack page on the Floor of Art.
View all Small Stories.
Fully realized the Floor of Religion.
Finish off Myo once and for all as Gebura with the Red Mist’s Key Page equipped.
Fully realized the Floor of Philosophy.
Defeat 3 guests after selecting the Abnormality page 'Fervent Beats' during a single reception on the Floor of General Works.
Lower the Cost of a 4-Cost page to 0 with the Abnormality page 'Happy Memories' and use it on the Floor of History.
Fully realized the Floor of Social Sciences.
Gain 15 Strength in a single Scene.
Fully realized the Floor of Language.
Defeat 5 guests through Burn damage in a single reception.
Be considered an Impurity.
Complete the reception of Xiao.
Complete the reception of 얀샋ㄷ요무.
Defeat a guest suffering from Burn, Bleed, Feeble, Disarm, Fragile, Paralysis, and Bind.
Complete a reception with Binah offering her assistance.
Have Gebura manifest the E.G.O of the Red Mist during a reception.
Use the Combat Page 'Clone' to possess 6 of a single Combat Page in hand.
Complete a reception after both sides’ Team Emotion Levels have reached 5.
Fully realized the Floor of Natural Sciences.
Complete all receptions accessible by General Invitations.
Fully realized the Floor of Art.
Defeat a guest from the Thumb or the Index with Pete’s Key Page equipped.
Fully equip a librarian with Battle Symbols.
Reach the rank of a Star of the City.
Complete the reception of the Crying Children.
Use an E.G.O page that synchronizes its user with the Abnormality.
Fully realized the Floor of Literature.
Fully realized the Floor of Technological Sciences.
Use an E.G.O page.
Fully realized the Floor of History.
Roll the maximum value when using 'Boundary of Death'.
Reach the rank of an Urban Nightmare.
Complete the reception of Tomerry.
Transfer a passive ability.
Reach the rank of an Urban Plague.
Reach the rank of an Urban Legend.
Acquired all the listed rewards from a book that contains an Objet d’art page.
Burn 100 books in total.
Send a General Invitation.
Reach the rank of an Urban Myth.
Enter a combat phase without slotting any Speed die for all librarians who can act. Your finger probably slipped for this one.
Use an Abnormality page.
Clear an Abnormality battle.
Customize a librarian.
Stagger a guest by deflecting.
Equip a Battle Symbol.
Burn a book for the first time.
Complete your first reception. You’ve made your baby steps!
Reach the rank of a Canard.
Obtain all other achievements.
Collect 100 unique Battle Symbols.
Inflict 60 Bleed to a single guest.
Defeat 5 guests at once using a single die of a Mass Attack.
Deal 150 damage to a guest with a single attack.
Have a guest and a librarian perish at the same time.
Deal 40 damage at once with the third die of the E.G.O page 'Sanguine Desire' on the Floor of Literature.
Activate the ability of the Abnormality page 'Nix' on the Floor of Natural Sciences.
Deal 100 total damage using the Abnormality page 'Lean, Bloody Wings' in a single Act on the Floor of Religion.