Here is the full list of all 28 Vampire: The Masquerade - there are Coteries of New York achievements.
Complete Adelaide Davis' questline ("Somebody's Watching Me") as her latest obsession.
Nobody came to your help in the grand finale. Except for...
Complete the game with all three characters.
Meet somebody you used to know in life as the Ventrue.
Complete D'Angelo's questline.
Become Embraced into the Ventrue clan.
Agathon came to your help in the grand finale.
Tamika came to your help in the grand finale.
Complete Agathon's questline.
Complete Adelaide Davis' questline ("Somebody's Watching Me") as her bitter foe.
Complete Benoit Segal's questline ("Faith and Myth").
Meet somebody you used to know in life as the Toreador.
Complete Tamika's questline.
Convince Tamika to cooperate with you.
Become Embraced into the Toreador clan.
Rage against your fate and complete the game with any character.
Hope came to your help in the grand finale.
D'Angelo came to your help in the grand finale.
Complete Hope's questlline.
Complete Frank Dougherty's questline ("A Nosy Reporter").
Meet somebody you used to know in life as the Brujah.
Convince Agathon to cooperate with you.
Convince D'Angelo to cooperate with you.
Convince Hope to cooperate with you.
Fail to recruit somebody into your coterie.
Accept your fate in Elysium.
Try running away from Qadir during your trial.
Become Embraced into the Brujah clan.