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.
Accept your fate in Elysium.
Complete the game with all three characters.
Agathon came to your help in the grand finale.
D'Angelo came to your help in the grand finale.
Complete D'Angelo's questline.
Meet somebody you used to know in life as the Ventrue.
Complete Agathon's questline.
Convince D'Angelo to cooperate with you.
Convince Agathon to cooperate with you.
Become Embraced into the Ventrue clan.
Hope came to your help in the grand finale.
Tamika came to your help in the grand finale.
Meet somebody you used to know in life as the Brujah.
Complete Tamika's questline.
Complete Hope's questlline.
Convince Tamika to cooperate with you.
Convince Hope to cooperate with you.
Try running away from Qadir during your trial.
Become Embraced into the Brujah clan.
Rage against your fate and complete the game with any character.
Nobody came to your help in the grand finale. Except for...
Complete Frank Dougherty's questline ("A Nosy Reporter").
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.
Fail to recruit somebody into your coterie.
Become Embraced into the Toreador clan.