Levi is an arse, as he dishes out tons of damage.
Nellie and her Journalists will have a distinct advantage in controlling the Interacts in Cloak & Dagger. So even though Levi might kill you, he’ll have a tough time scoring points off the strategy. So you’ll play for points.
Distraction +X will be one of your most powerful tools in buying time. Levi wants his Focus +X to do max. damage. That along with Stunned and Slow.
Soulstones, even if you can’t use them for reducing damage, you can use them to give negative flips to the damage flip. This again hurts Levi.
Levi himself is a distraction. Look to the crew that feeds him. Marlena, the Scavengers and Waifs, take them out, and you’ll neuter the old child diddler greatly.