When andro comes for you don’t panic try to land 1st bullet then he will take nether step to make more damage at this time use stealth and he will go crazy now land another sniper shot if you miss quickly switch pistol and spam left click.
Zhin is annoyingly good at surviving fights using Counter and Billow. But keep in mind that while using his abilities he isn't a threat but a DISTRACTION. Just live him be and focus on an other enemy while you waith for his ability to expire
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
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