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