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 Benoit Segal's questline ("Faith and Myth").
Complete the game with all three characters.
Meet somebody you used to know in life as the Ventrue.
D'Angelo 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 Frank Dougherty's questline ("A Nosy Reporter").
Complete Tamika's questline.
Meet somebody you used to know in life as the Brujah.
Accept your fate in Elysium.
Try running away from Qadir during your trial.
Become Embraced into the Ventrue clan.
Complete D'Angelo's questline.
Convince Tamika to cooperate with you.
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.
Agathon came to your help in the grand finale.
Convince D'Angelo to cooperate with you.
Complete Hope's questlline.
Complete Agathon's questline.
Fail to recruit somebody into your coterie.
Meet somebody you used to know in life as the Toreador.
Convince Agathon to cooperate with you.
Convince Hope to cooperate with you.
Become Embraced into the Toreador clan.