Use Arrow keys to move and aim, Space bar to interact or throw enemies, A to shoot, S to jump (double tap for double jump), R to reload, Q to switch weapons, E to eat food rations. Follow the in-game instructions that will help you a lot.
After the alien invasion, everything in Earth has changed, even the ecosystem has been adapted to the needs of aliens. And the military has dropped nuclear weapons all over the world! You managed to escape the explosion, but now you must find a safe place, search for supplies and lead other survivors. Your mission is survival!