This is an all-rounded [Gauss] build for Steel Path.
You can use the Decaying Dragon Key to shieldgate because [Gauss]'s passive reduces shield recharge delay time.
You can swap out: Aura, Exilus, [Rolling Guard], [Adaptation], [Natural Talent] for mods that suit you more.
Just do not add Strength to this build as it will not positively affect Kinetic Plating's DR or Thermal Sunder's armor strip.
Cast Redline and Kinetic Plating whenever they run out.
Doublecast Thermal Sunder to strip armor or tap to CC.
Top off your battery with Mach [Rush].
Use [Rolling Guard] to shieldgate and escape Toxin and Electric damage.
Melee attacks add 0.25% battery charge.
Kinetic Plating only protects from Physical, Heat, Cold and Blast damage.
Redline + Kinetic Plating adds +100% melee damage and guaranteed stagger on hit.
Thermal Sunder can maintain up to 4 Cold and 4 Heat areas at once.
Other parts of the build:
Ferrox for some CC and grouping.
Epitaph for priming Viral on enemies.
Stropha as the main damage tool.
Panzer Vulpaphyla for Health Orbs, some more Viral and universal companion utilities.