Note: These hints below were obtained by Rukral (Malachi Agg) All credit goes to him.
Malachi Agg asks, "The location of the second cheget key. Is that possible?"
Granny Smith asks, "Malachi? Are you familiar with sumerian mythology?"
Granny Smith says, "You might wonder why we use so much sumerian mythology."
Granny Smith says, "There's a famous, empowering romance in SUmerian lore."
Granny Smith says, "Ereshkigal and Nergal."'
Granny Smith says, "Lemme explain."
Granny Smith asks, "Are you -also- familiar with the trials of Gilgamesh?"
Granny Smith says, "Alright."
Granny Smith says, "Let me give a quick summary."
Granny Smith says, "So, gods from the Underworld can't go to 'heaven', and vice versa."
Granny Smith says, "Ereshkigal chose Namtar to represent her."
Granny Smith says, "Everyone knelt before Ereshkigal, save for Nergal."
Granny Smith says, "Nergal was punished to execution."
Granny Smith says, "The Cunning God, Ea, did something special."
Granny Smith says, "Ea is the god of magic, underground water, etc."
Granny Smith says, "Ea gave Nergal seven demons."
Granny Smith says, "The personification of plagues to help him in his defense."
Granny Smith says, "Now, Malachi, tell me something."
Granny Smith asks, "What else requires seven?"
Malachi Agg gibbers, "Thim automaton, for thim minimum amount of keys?"
Malachi Agg gibbers, "SSiixx andd thhiimmm iirriiiddiiiiumm??"
Granny Smith says, "I can't finish the lesson."
Granny Smith says, "I'm sorry."
Malachi Agg gibbers, "EVEN SO!!!!!!!!!"
Granny Smith says, "You only get a taste."
Malachi Agg gibbers, "THIS I'M SURE WILL BE HALPFUL!!!!!!"

Granny also linked http://arxiv.org/ftp/arxiv/papers/1407/1407.6246.pdf later.