A new challenge pack DLC has been launched today for Ghostbusters: Sanctum of Slime which adds two new game modes that are not for the weak of heart. "Lonely Hero" mode puts you against wave after wave of enemies with no assistance, while "Arcade" mode restricts you to three lives to see how far you can get. The Challenge Pack DLC is available on all platforms for the low price of $2 (160 Microsoft Points) and is available now.