New campaign consisting of 5 lengthy missions.
In this expansion, the missions are progression-based, not arenas. Loot and crafting system similar to the endless mode.
Ammunition and keys to doors are hidden in the corners of locations, which you will need to find.

Two new weapons have been added:
Crossbow - a weapon that shoots multiple arrows at once. Excellent against hordes of weak enemies.
Railgun - a powerful energy weapon without recoil. Ideal for taking down large and strong enemies.

Even more enemies and more epic battles!