Missions: A list of the missions you encounter.

Vehicles: A list of the vehicles you can buy/find.

Weapons: A list of the weapons you can find/buy.

Zombies: A list of the types of zombies that you will encounter during the game.

Powerups: A list of various powerups that can be found during the missions.

Currencies: A list of currencies used within the game to buy/upgrade cars, weapons and boosts.