CHAPTER 31 - GUIDED BY SPARKSThis achievement is on
Chapter 31 of the game. Ignore the switch beside where you start for now, head to the right until you reach the railway cart, drag it to the left until it is under the large toggle switch up high.
Now head back left to the area with the cart with the ladder on it. Go to the
left hand side of the cart and push it to the top of the right slope, then let go and quickly jump and climb the ladder. Jump over to the the left side platform and wait until the ladder is heading
back towards you and in the centre before you pull the switch, now quickly jump across to the ladder and use it to get up to the high right side platform. Run to the end of the platform and jump over to the toggle switch, you will drop down into the train cart you moved earlier.
The cart will start rolling, when you reach the ladder, climb it and keep up with the
BACK of the cart rolling underneath you, you need to jump over a circular saw blade and time it so that you land back in the cart.
At the bottom of the slope get in between the cart and the button that it is pressing to switch on the power.
Push the cart away from the button and quickly climb it as it continues to move away then turn and jump up on to the platform, run and jump at the end so you don't get electrocuted.
This guide shows a good video of this from the start.