Eternal winter

A world where there is no place for pity. The earth was covered with snow and fierce frost. People could not stand against nature, and hid in the hope of something better. Some say it's a new weapon, some say it's God's punishment. In 2030, a massive war for territory began. The war was nicknamed "The Blood Surge" because of its losses. Then, for the first time, a new weapon was used, a strange gas that turned all living things into horrible creatures, but the new army turned against its inventor. Since then, terrible creatures have been walking through lonely tunnels, waiting for their new victim.