Very confusing level with very little room for error. Follow the video as is, when you get to the big atrium room with the lamps, turn off all the lamps... Locations are as follows:
- Left behind couch
- Right on Table
- Middle of room on stage
- Right on Banister
- Right back behind vase
- Up curvy right stairway straight ahead
- On balcony table
When you jump down, head up the straight stairway and turn off the left and right lights of the three, this will open the window on the right...The next room is confusing, But At the spinning doorways puzzle you want to go Back, Forward, Forward, Forward, Back and then left.
To unlock the achievement, you must have a time under 3 minutes. I completed it once with 2 minutes and 51 seconds, and then in the video below I ended with 2 minutes and 46 seconds, with a few mistakes...