Borderlands: The Pre-Sequel players are getting new DLC this month. 2K Games announced today that an expansion called The Holodome Onslaught, the game’s second post-release add-on, will be available December 16 for Xbox 360, PlayStation 3, and PC. It’s included with The Pre-Sequel’s $30 DLC pass, or can be purchased separately for $10 on all platforms.

The Holodome Onslaught expansion features new story content, including appearances from well-known Vault hunters such as Gaige and Axton.

“While they were gone on a mission, they missed out on the events of Borderlands: The Pre-Sequel and ask Athena to recount the story,” 2K says. “Since they’re not the most patient badass Vault Hunters on Pandora, they just want an abbreviated version–only the juicy, violent stuff.”

As Athena tells the story, players will venture through The Holodome Onslaught, a new challenge arena that tasks you with fighting against wave after wave of enemies. Foes will include “some of The Pre-Sequel’s most memorable badasses, as well as several new enemies,” 2K says.

Players who survive will be able to earn new weapons, class mods, and “some radical new heads and skins.”The Holodome Onslaught DLC also includes the Ultimate Vault Hunter Upgrade Pack, which boosts the level cap to 60.

In addition to the paid content, The Pre-Sequel will introduce a free patch next week that adds the Ultimate Vault Hunter mode, which is described as “more difficult.” Players can also reset campaign progress at any time, while enemies will scale to your current level, 2K says. Full patches notes will be available soon.

The Pre-Sequel launched in October, and developer 2K Australia is not finished supporting it just yet. Two further expansion packs are coming to the game, introducing one more playable character, a new campaign, and more. 2K has not announced release dates for these expansions.

For more on The Pre-Sequel, check out GameSpot’s review.

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