[Corrupt Charge] is optional for [Galvanized Reflex] but if you are only bringing this out to slam acolytes then you don't really have time to keep galvanized stacks up.
Sacrificial Steel is optional for Galvanized Steel if you are more frequently slamming.
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: Drifting Grace for extra moibility (+20% sprint and slide) OR Seismic Slam +50% slam radius if you are constantly slamming to trash clear or want to build up Shockwave Synergy even faster
Evolution III: Shockwave Synergy: Gain 4 combo per enemy hit with a normal slam. This means if you slam 20 enemies you can gain 80 combo which is equivalent to 4x multiplier. If you just light slam a big group of enemies 3 times you will hit 12x combo. This means you can launch a huge 12x heavy slam every 3 normal slams.
Evolution IV: Evolved Ascension - +30% parkour velocity
Evolution V: Universal Readiness - collecting ammo increases combo