Hallowed Barb DLC

The newest and possibly the largest DLC included in the game.

It includes:

 * A mysterious new character.
 * A brand new and exciting trial.
 * Many new creatures to fight.
 * New bosses to murder.
 * Perhaps some Lore?
 * And a much more challenging quest than the Delicate Flower.

To put into Detail:
Here are the pages that are related to this DLC.