Survive and fight five waves against the infected trying to breach the extraction zone. You play as US army Rangers tasked in holding down the LZ until rescue arrives. Players can pick up two three classes to aid there survival against the infected. Every round players succeed in they receive a care package that cons three items players can pick from. Players can pick weapons like Assault rifles or shotguns that have unique use. Players roll dice to determine hit or miss. Once the final wave is reached players will fight against a boss known as a bulldozer that has few attack patterns. —description from the publisher