The Deluxe Pack DLC Upgrade contains all of the extras in the Deluxe version that are not in the standard edition.

This DLC includes all of the extra playable characters: Archmage, Bright Wizard, Dwarf Trollslayer, Shadow Warrior, Ogre Irongut, Warrior Priest and Witch Hunter.*
You will also receive all of the Legendary Weapons: Gotrek’s Axe, Reaver Bow, Slayer of Kings, Staff of Volans and Sunfang.**
Finally you also get a Dungeon Pack: Necromancers & Skeletons.

* If you have purchased any of the above prior to purchasing DLC – you will not get duplicates!
** Make sure at least 5 of your weapon/item slots are empty to accommodate these.