It should be noted that there's no point having all your HS tanks Shield Wall at the the same time. One at a time is perfectly adequate, so long as his healing crew is even remotely awake. Just have them rotate Shield Walls in starting at 10% or so.

As far as the original topic, like multiple people have tried to say, there's little to talk about anymore.

Hateful strike has some kind of positive-feedback threat mechanic. Strategize around that, and the details are immaterial.

If HS3 has trouble getting Struck early on, force one or two with a Gem and you're good to go.