This is a singleplayer/coop centered DLC, introducing new maps, a new boss fight, a new weapon, and a much deeper storyline (deeper in terms of wading through demon blood):

Key Features

• 3 singleplayer/coop maps themed around picturesque ocean view settings: Monastery, Docks and Ruins
  
• New Ruins level with epic sea-monster boss fight
  
• Redesigned boss: check out the hellish offspring of Thor and Leviathan
  
• New enemies: Ancient Soldiers, Conquistadors, Gimps
  
• Revamped enemies from the original Painkiller: Hellbikers, Rocket-Jumpers, Scythe Monks, and Grenadier Monks
  
• New weapon: Cannon; Primary Fire: shoots a massive fiery cannonball that pushes enemies away, burning/insta-gibbing them on direct hit and at close range; Secondary Fire: shoots an icy cannonball that freezes multiple enemies on direct impact, and slows enemies in an AoE-radius
  
• New Tarot Card: 666 ammo