look at everything in the dark room when tut tut is on your back because if you don't you will miss the achievement. In pyramid after Tut-Tut sit at his throne Nate must return to main hall and walk in right side of hall (where the bugs was). Look at the left small wall and you can see the board. Try to open it and the minigame will start.
You must take the prize and golem must not catch you.
I made this video for you all so it will be easier