"Beat Factorio" means constructing a rocket.

"Figure out how" means roughly that it wasn't hand-held through the process. Roughly, the supervised part of the AI's training process must have been plausible in a world where Factorio didn't exist. (But it's allowed unlimited unsupervised play of Factorio.)

Every January, I'll check whether there's any credible claim  that somebody's done anything-like-this; if so, I'll dig in to see if it meets my "figuring out" criteria; if so, I'll resolve this market YES. Otherwise, on 2030-01-01, I'll resolve it NO.