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