Honestly there isn't a particularly good way to deal with Archeops directly for Lando/Bats. Perhaps the hardest counter would be Wobuffet PHF, although I'm a bit worried that Wobbuffet will mess up your consistency. I think the best counter, although might be a bit impractical with the resistance, is using a combination of Lando snipe, Lucario and Lysandre, but even then that's fairly slow.