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