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