There's not much to it. Do your 1-2-3 combo (AoE: 1-1-1). Use Hot Shot and Drill (Lv72 AoE: Bio Blaster) on cooldown. Use your Gauss Round and Ricochet charges. Summon your turret when your battery gauge fills.

When you have 50 heat, use Hypercharge and Wildfire. For the duration of Hypercharge, spam Heat Blast and alternate Gauss Round and Ricochet, starting with whichever one has more charge. Ex: Heat Blast (Gauss Round) > Heat Blast (Ricochet) > Heat Blast (Gauss Round) > Heat Blast (Ricochet) > Heat Blast (Gauss Round). AoE hypercharge, spam Autocrossbow. Autocrossbow doesn't recharge Ricochet and Gauss Round like Heat Blast does.