If you see Evie uses Ice Block and stays in it to heal, Charge your shot and aim for the head. there is a small window where Evie can't take action after Ice Block and you can one shot her as she comes out.
NEVER underestimate a Mal'damba, he is the best dueling suport if the game, even as a flank be wary of his reload, never take on Mal'danba at close range alone, if you can avoid it.
If you encounter Strix as Kinessa, wait until he comes out of his Stealth and use a card that reveals enemys on hit for about 2 seconds to outplay other snipers.