Lego Batman 2: DC Superheroes Walkthrough Part 33 – Underground Retreat, Part 3

Just after the rest of the train detaches you will find a Save Station available for your use. Head to the end of the exposed car you are on. There is a Joker-In-A-Box you need to dispatch quickly and then a grapple point you need to hit to move on. Once you are inside the next car, the Deconstruction Ray will hit it and destroy it. You can either fight to the end of it and destroy the henchmen and seats for chips or just climb up the ladder at the start of the car and walk the length of it and jump off to the next one. This pattern repeats on the next car as well. Be sure to use Superman to put out all of the fire that is blocking your way forward. Once you make it to the end of the third car you will see the Ray destroy this exposed car's bed and expose a mass of electricity. Destroy the 2 glowing crates and you will find the assembly pieces for a Suit Changer for Batman. This will give him the Electricity Suit. Hop into it and have Batman hop into the electricity. On the far end you will find a socket to draw the power out of. Do so and then have Superman head over to the right and pull on the Bar to clear the path forward.

Head into the engine car and the Ray will strike again, doing the same amount of damage. Head out to the front of the train to find the socket you need to pass the electricity into. This will get the train to its destination and finish out the chapter!