Thanks for the hint I guess? I can't tell if you're telling me what to do when I do beat ζ4, or if I just don't entirely understand the hint. If you are giving me an actual hint, then the only way I see it being making sense would require solving ζ4.
Ok I got it. V guvax gur grez "n" pna or irel qrprcgvir va gur frafr gung gur fbyhgvba V sbhaq ercynprf Nyvprf abqr jvgu gjb arjyl perngrq abqrf, jurer ol vzcylvat fvathyne, ercynpvat n abqr jvgu n abqr gung freirf gur fnzr cbecbhfr nf gur byq bar jbhyq whfg znxr zr guvax "Jryy jung gur urpx urpx vf gung fhccbfrq gb qb!?".
Also, not entirely related to the puzzle, but I absolutely hate my ignorance to noticing the game creator in the comments.