The idea behind this deck is to use a sniper rifle to smash mutations from the back of the pack with a slow and steady approach. You won't have as much success if you try to hipfire your sniper rifle and finding a stumble mod for your rifle is a priority.
First five cards form the core of the build, with run like hell being there for mobility when you're not aiming. Gotta stick and move.
Next five are polish cards to improve function and quality of life.
Final five are pure damage cards to bring the hurt, but can be swapped out if you have other preferences.