Open fire as soon as you see someone, and if someone is using metal legs and supercharger at once, pray lol.
Y'know, that's a loadout you don't see much anymore (in comparison to launch). Around launch, everyone and their grandma had a loadout that was Any primary, USP, Essence Salvage or Stealth, Metal Legs, SuperCharger or Blinding Powder, and Improved Melee. Entirely melee focused class.
Thank goodness for HVS's patches, though, as that way OP as heck. Stealth and Blinding Powder alone would have made then invincible.