Very impressive, but has she actually beaten the game? I've seen videos of some boss battles, but not the final boss. It's an exciting saga to follow either way.
It looks/sounds like she's wired four ~thoughts~ to buttons but also uses eye tracking for movement.
cf https://www.youtube.com/watch?v=UXzncNh7rr8 "I Made a Mind-Controlled Game Controller" which isn't that technical either but talks a bit about "training" and limitations.
