Don't fight Maeve if she doesn't have low health! Position yourself to the high ground on the back so that she'll need to use her movement abilities to get to you. If she does, group up with your tank or teammates and "spam" VBE to get assistance
Once an Andro tries to flank you, you should try to get one or two shots on him, then use your seedlings. He will most likely use reversal which gives you time to escape. This works best if Andro's escape ability is on cooldown (after he has flied)
If Vivian uses her shield, aim for her feet if you’re running direct damage, or the ground below her if you have AoE. This is extremely useful in any range combat with her.
Vivian WILL destroy your shield, no questions asked. But you have the AoE advantage. Get in there and aim for her feet if she has her deflector shield up. You can hold out for longer than you think if she doesn’t have her sentinels up.
The best way to deal with a Zhin trying to kill you is to play your deck with full life steal and use Jenos Luminary Legendary Card, this will get you a lot more of damage to make him use his billow and counter early, and you'll win 4/5 times