I've been having an extremely hard time understanding
Ainsi, plus l'attaque ennemie est puissante, plus la contre-attaque l'est également.
Everything just seems so out of place to me. If "plus l'attaque ennemie" was "plus attaque l'ennemie" I would understand, it'd be just an inversion, and even if it isn't it doesn't make sense to me. It'd mean "More enemy attacks it". And if was ennemie was an adjective: "more the enemy attack is powerful". So I don't understand at all. Can someone break this sentence up to make it more easily understable?