Prometheus Easter egg

It struck me when playing through Prometheus that I have not yet revealed the Easter egg I included in the game. And what better time of the year to tell it than right now? :)

In Kolchis you need to enter the doors in the woods in this order:
1. Take the first door to enter the labyrinth.
2. Go to the right and take the door you come across.
3. Go to the left and take the first door you come across.
4. Go to the left and take the first door you come across.
5. In the room you are in now, equip the Wings of Icaros and jump into the wall to the right. You will enter a room with a boss fight - against Sand Man from Mega Man 42. :) Prometheus only gets damaged from the magic dust, he will not fall asleep.