04-05-2009, 04:54 PM
No you definitely don't need to pull that lever to continue in the game. The floor button opens the gray doors, I go up once and get the red and blue keys, then slide down the pole and go around to the room to the right of 15500 and up through the ceiling then back to 15300 from the right. I'm not sure I even noticed the lever first time until I got to the end of the game. But many levers in your game initiate actions that aren't needed till later. It was my oversight! Let me know if you still want the saved games.