Once Andro knows where you are sniping from he is gonna take you down 8/10. You need to change position with your stealth as soon as you see him, before it's too late. Never use the same spot too often or you'll make it easier for him to get to you

Sha Lin needs to see you directly to hit a shot, but you don't. Use the map's corners to shoot him down with AoE damage while protected by the map, no need to waste your shield.

Best thing about Torvald? No movement ability or CC immunity ability, a perfect target for your stuns. By stunning him you can stop him from recharging his shield or using his ult, so he'll have to buy resiliance first instead of cauterize or wrecker

With the Demolition legendary your Grumpy Bomb will stun Terminus even through he's Power Syphon, so that you can throw him Sticky Bomb to your heart's content. But you want to use your Grumpy to zone him out of the point, instead of aggressively