This build uses perks that allow you to spam heavy slam consistently while staying at 3x combo and always triggering Incarnon mode without building combo.
EVOLUTION GUIDE
Evolution I : Incarnon mode - heavy attack at 5x combo to transform into Incarnon mode, where you will receive a passive +40% attack speed and +2 range. This basically allows you to drop attack speed and range mods on the melee.
Evolution II: Seismic Slam +50% slam radius
Evolution III: Adept Reflexes - +15 initial combo. Combined with corrupt charge, this brings initial combo to 45, which hits the 3x heavy attack multiplier mark.
Evolution IV: Evolved Ascension - +30% parkout velocity
Evolution V: Universal Readiness - collecting ammo increases combo