Objective 1: Start Up the Machinery
The first Batman prop is just to the left of the start of the level, don’t forget to smash it.
Batman Smash Challenge: 1 / 3
Equip Batman with the Space Suit and follow the path north. Cut through the gold LEGO panel with the laser to reveal some LEGO bricks. Build the bricks into a piston that starts up the machinery.
Use a flying character to stand on the floor above the pistons. Use Robin’s Magno Suit to interact with the handle there and open a case to reveal The Joker Card.
The Joker Card
Hop on the conveyor belt to the right and follow it across the lava. At the end of the belt, there is a grapple handle. Use it to climb up to the next level.
Objective 2: Free Green Lantern
After grappling up, destroy the nearby silver LEGO boulders. Equip Batman with his Demolition Suit to get the job done. After the debris is clear, the boulders on the conveyor line fall into the smelter. Be sure to collect all the studs, including a few blue studs and a valuable Purple Stud!
Have Robin hang off the twirl pole to the left of the smelter. With each rotation, he cranks up the heat. At its maximum, the steam knocks Green Lantern from his shackles and into the nearby water tank.
The water tank shatters, leaving behind a gold plated Green Lantern and some bricks. Build the bricks into a ladder and use a laser to remove the gold from Green Lantern.
Objective 3: Make Your Escape
Climb the ladder and smash the boxes along the back wall to reveal some LEGO bricks. Build the bricks into a green lantern pad. Interact with the pad to create a surf board that propels you to a ledge high above the smelter. Jump toward the glass to progress.
Pull the handle hanging from the ceiling of the ledge area. This aligns the gears to the left and the platforms attached to them.
Don’t forget to fly to the top floor of the factory to find the final Batman prop.
Batman Smash Challenge: 3 / 3
Now that the gears have stopped moving, head to the left and cross the platforms that have aligned. Handle the incoming Goons and use Solomon Grundy to tear open the door with the hyper strength handles. Pass through the now-open door to exit the level.