Contracts are another highlight which allow you to unlock additional weapons, bonuses and star cards which makes the game feel more dynamic even though they are similar to the challenge system. (impulsegamer.com)
To aid players in battle, the game features a variety of additional weapons which, using the mouse, can be used directly on zombies. (adweek.com)
There will also be treasure chests to find around the map as well hiding even more rare loot from additional weapons, to pieces of heart. (gamerassaultweekly.com)