Torvald is a sitting duck. If he's on the point, either rain down sticky bombs, drop grumpy bomb or poppy bomb him away. He has no movement abilities. As long as you have the high ground, he's toasted.
Sha Lin is at heart a sniper. Eye him from a distance and try to come closer without him noticing. Then, jump at him with poppy bomb while firing sticky bombs. If you get the jump on him you will kill him.
The best way to get Torvald down is the combo between Wrecker and Street Justice. Keep your distance if you know Nullify is up, because Nullify is your ruin. Knock his health down from a distance, rush in, and pounce once hes at/below half health.
Two words. Street Justice. Poke from a distance until you, or someone else can get her around/below half health, and when she's not using earthen guard, pounce.
Avoid stacking up in a line as you attack or your team will get speared with a presence shot for 800 piercing damage. Be wary if you see a Lian with Eminence as it will focus on presence spam. Stay behind shields as it cancels on hit effects.