Literature
Hypnokink RPG Project - Stigmata Breakdown
Okay! So, aside from deciding which party members you use and how you deploy them, a big part of the progression in this game is via those characters Stigmata. These are alien crystal brands engraved onto a Trancewalker's brain, which resonate with mental energies to a) boost the Mamazonian mind control signal, and b) enhance their physical powers and abilities directly proportional to their mental states. Through inserting purer or bigger crystals into a character's Stigmata, you can massively boost their overall performance.
In short, the Dominion's tech is all powered by mental energies; it works because everyone believes it works, and the same logic applies to Stigmata, Fire Crystals make you stronger because that idea is burrowed into your subconscious.
Defeating Trancewalkers involves shattering their Stigmata which both breaks them free of the Mamazonian control, and drops Crystal Fragments, which you then save up and combine together to make Crystals to boost your party