Hey, really cool mod. I successfully completed all the Easter eggs solo, but I noticed that the progress wasn't saved. To work around this, I used cheat codes to unlock everything, and it seemed to work. However, when I entered the Buried map, I noticed that the machine doesn't have any of the lights on, whether for the Navcards or the Easter egg itself.
THEDOMAIN for clarity I am checking the box at the bigging of the game before starting the easter egg with power on