The unofficial expansion brings several new quests to the vanilla version of the title. One specific quest to each of the playable clans designed specifically for evil characters as well. Actually there's quite a bit going on for this one.
From the description and feature list:
This is an add-on for Vampire the Masquerade: Bloodlines that adds a series of quests to the game, including one quest specific to each of the playable clans and a quest designed specifically for evil characters. Each clan quest exemplifies the ethos and operations of the clan!
Additionally, this mod integrates several other mods available for Bloodlines, including:
Arsenal Mod: Which modifies all the existing weapons to be more interesting and dynamic and even includes throwable hand grenades! Read more here
Camarilla Edition 1.4: This mod overhauls most of the game play elements, including revised disciplines, blood loss over time, new character models, sound effects, an in-game online college, and more.
Comp Mod Lite:A modified version of the Companion Mod, this adds Heather and Yukie as traveling companions.
Weapons Sounds Mod: This mod changes the sounds for all the original guns to make them more realistic and interesting. Read more here
Histories Revised Mod: This mod tweaks some of the histories, and adds a few additional rules, including more difficult stealth encounters, increased falling damage, and greater frenzy probability.
Unofficial Patch 7.9: Clan Quest Mod, is built ontop of the latest version of the Unoffiical Patch, and includes the ability to toggle the patch's "plus version" mode, which includes enhanced features and game play. Read more here
Music Mod – Revamps (hah!) the entire game's soundtrack to something a little more eclectic. Read more here
Pop's Difficult Mod – Increases the difficult of all enemies, making them stronger, faster, and tougher. Also enhances the player's disciplines as you must rely on them more heavily.
PnP Combat Mod – Captures the spirit of the combat system of the game's PnP equivalent. A great combo with Pop's, to create a truly harrowing game experience, i.e. “Nightmare Mode”.