Borderlands: The Secret Armory of General Knoxx (2010)

The storyline picks up where the main game storyline stopped, telling the story of Pandora after you uncovered the secrets of the Vault. The Crimson Lance is preparing for assault to get the alien technology back and you must enter their Secret Armory to prevent this from happening. The main features of this DLC are 44 new quests, weapons, roughly 30 enemies and vehicles plus the level cap increase which allows you to experience up to level 61.