Its ment to be a challenge. Explo miners already have 1 whole mine thats wider and deaper than Zeus. What more could you want? Like seriously.
Support side note: Kronos was the father of the "big three" (Zeus, Poseiden, and Hades) Oranus and Gaea are the parents of the spirit of tartarus (the bottemless pit) and Kronos. I believe that Chaos is the roman name for Kronos, but Zeus is greek. Choas sounds better though lol.