There was a Science Channel documentary on this a few months ago. According to them, the only real hope we’d have of surviving it and defeating the aliens would be to fight them with guerrilla warfare tactics, which is the classical way an inferior force can defeat a superior force.
Out here, far from their resupply lines, they would have a finite number of “men” (robots?) and a finite amount of equipment. If we could somehow continue the struggle for years, their losses would add up and make it too costly for them to continue. So they would give up and leave, go look for easier pickings. So says the Science Channel.
It won't be war or towed in asteroids...they will just spray the atmosphere with the human form of d-con and we are all dead in 5 minutes or less.
Anti-alien suicide vests and AAIEDs?