It's been 2 months since the outbreak, it came out of nowhere and before long.... 85% of Humanity was gone. The Zombies were already hard enough to deal with, indestructible... unflinching unless the brain was destroyed, then... the "Demons" came. A strain of the virus, "Demons" were stronger, faster, smarter... same weakness... but 10x tougher to deal with, able to launch vehicles with a single punch and flip over tanks by ramming into them. Now the world was broken up into masses of undead, and small bands of survivor groups.... being alone was as good as a Deathwish