Resistance: Fall of man

In the 1900s, an alien race known as the Chimera arrived in Russia. Using advanced technology, they infect thousands of people and subject them to artificial evolution, creating a diverse army of creatures ranging from simple foot soldiers to spider-like giants. By 1949, all of Europe had fallen to the Chimera. The following year, a vast invasion force tunnels under the English Channel, conquering much of England and leaving only scattered pockets of human resistance. In 1951, the United States, despite taking a position of neutrality in the conflict, sent a task force to assist the UK as part of Operation Deliverance in exchange for a "secret weapon." A work in progress, further updates will be made later. Based off the series of games of the same name.