The Dawnguard - A group of vampire hunters dedicated to destroying the Volkihar vampire clan. Two new factions are added with this add-on: Some places may not be entered until the related quests have been started, and many quests will send the player to places that already existed in the original version of the game.
Magic - Three new blessings, four new dragon shouts (only three of which are player-accessible), and nine new spells are added by the add-on.Items - New items added by the add-on include apparel, armor, books, jewelry, weapons, and more.A few creatures added are entirely new types, and there are several unique creatures added as well.
Creatures - Of the creatures added by the add-on, most are new variants of creatures already present in the original version of the game.Surgery - A face sculptor has appeared in Riften and can change your character's appearance.
There is no quest immediately added to the quest journal when you first install the add-on. Quests - 39 quests have been added by the add-on, with both a main questline and multiple side quests.