This is a third-person shooter in which players assume the role of elite security agents tasked with covering up a corporation's involvement in a viral outbreak. Players use machine guns, shotguns, pistols, and explosives to kill zombies, mutated creatures, and human enemies in frenetic combat. Battles are highlighted by screams of pain, realistic gunfire, explosions, and large splashes of blood that stain the ground. Some weapons cause dismemberment or decapitation; exposed body cavities, organs, and intestines are found in some environments. Players can also perform attacks that depict more intense acts of violence: slitting enemies' throats with a knife; shoving live grenades inside zombies' mouths; performing close-up headshots. Language such as “f**k,”“sh*t,” and “a*shole” can be heard in the dialogue.