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.

If you're playing against a Strix, your best option is hit 1 fully charged shot before he goes invisible, then remember, Strix is a peeker, he will peek to get his shots while invisible, try to predict when he might peek or where he might be and won

With the proper cards a fully charged shot of Kinessa will reveal any enemy for a brief time. This gives Kinessa the upper hand over Strix. But be careful, You have to land the initial shot first to detect him after he goes to stealth