Purgator 1 (on direct kills, not dot kills) creates a 1-stack gas cloud, and as such requires grouping from Ensare, Magus Anomaly, or [Nautilus]' [Cordon] to be effective. [Purgator 1] also suffers from poor ammo economy, so it needs an ammo mutation mod. Shivering Contagion priming is one of the most effective methods, alongside grouping.

• Banes & Rifle Elementalist are necessary for higher gas dot damage, and Continuous Misery is necessary for longer-lasting clouds
• Primary Acuity with Galvanized Scope puts Purgator 1 into tier-2 crits
  • Gas clouds will trigger Galvanized Scope
• While Primed Cyro Rounds are essentially double raw damage, it does nothing for the gas clouds, which are the main source of damage
• Gas damage doesn't scale off elemental mods (toxin + heat), so we don't mod for it. The only exceptions are Leaded Gas, Resupply, and Valence Formation
• Bladed Rounds + [Semi-Rifle Cannonade] are flexible for [Primed Shred] + [Amalgam Serration], depends on external buffs