This is my steel path [Basmu] build, it turns out the missing piece I've been waiting for this whole time was [Primed Magazine Warp]. Gal Aptitude completely replaces [Serration] after a single kill since you always get 4 status procs on the enemy (heat, viral, slash, electricity), primary deadhead is very easy to proc since with primed magazeine warp you never run out of ammo as long as you fire in bursts so you can get headshot kills instead of enemies dying from your slash procs when they get low. Once you're fully ramped up it melts enemies at a consistent rate even over an hour into a steel path survival mission.