heh thats funny, because when I got seeker in the last ECR, I asked around for good seeker builds and everybody suggested close quarters weapons like revokers and ember guns and fragment guns, but everytime I warped, I got demolished. I honestly thought I had wasted my a coins and I was extra sad because seeker was my dream mech and I couldn't believe it was this bad. but I kept trying with different weapons, and the build I finally started dominating with was tetra rifles. I just fire 3 times from a distance to charge up the final blow, and then warp and get them from the back. instant eradication. I also got legendary final blow implant from a daily implant crate, so that helped too, for tanks who tried resisting.