Objective 1: Find the Magno Suit
Follow the trail of studs and take control of the gravity turret nearby. Wielding the turret, take aim at the atrocious Joker spaceship that descends and move it to clear the path. Next, deal with The Joker space goons that assault you before you smash The Joker prop on the right side of the zero-g floor.
The Joker Smash Challenge: 1 / 4
Continue up and follow the short bridge that is now open to you. Destroy the LEGO crates and The Joker prop you come across, and then claim the Magno Suit token. Now that Cyborg can equip the Magno Suit, use your newfound magnetic ability to climb the nearby blue LEGO wall. Once at the top of the wall, interact with the magnetic slide over the door to open the path to the next area. Pass through the now open door and onto the movable platform.
The Joker Smash Challenge: 2 / 4
Objective 2: Destroy the First Turbine
Once the platform comes to a stop, make your way to the right and stand on the black and yellow zero-g pad. This lifts all of the enemies on the zero-g surface into the air. Target the floating baddies with projectiles until they are defeated to complete the Combat Challenge for the stage.
Combat Challenge: Zero-G
Near the Zero-G surface, there are some bricks that you can build into a grapple point above the cabinet full of conduit. Pull on the grapple handle to expose some gold LEGO conduit. Use a character with the laser ability to destroy the gold LEGO. Build the bricks that spill out into a Speed Spot. Run on this Speed Spot as The Flash to extend some stair steps nearby. Ascend these steps to access the first turbine.
At the top of the stairs, use the refuel station to fuel up Batman’s jetpack. Now, go back to the speed spot and fly to the platform above it. Destroy The Joker prop you find there.
The Joker Smash Challenge: 3 / 4
Switch to Cyborg and equip the Space Suit. Fuel up at the refuel station and then fly to the platform above. Now, equip the Magno Suit and interact with the magnetic LEGO door. After the door opens, jump onto the red pad that is inside the turbine. Next, as Batman, destroy the gold LEGO pieces of the turbine that are revealed once the doors have opened below.
Objective 3: Destroy the Second Turbine
Cross the bridge back to the left side of the room. Fight off the goons you find there and equip Cyborg with his Magno Suit. To the left of the stairs, you find a magnetic LEGO wall. Interact with the wall to pull down a box with a gold LEGO face. Use a character with the laser ability to trace and cut the gold LEGO, which causes LEGO bricks to spill out. Build these bricks into a refuel station.
As Batman, refuel and fly to the platform above. Destroy The Joker prop in the far left corner and defeat the goons that you find in the area. Follow the platform to the right, enter the open turbine and stand on the red pad. This opens the door on the turbine below, exposing some silver LEGO pieces.
The Joker Smash Challenge: 4 / 4
Equip Cyborg with his Demolition Suit and destroy the silver LEGO on the turbine. Now that both turbines have been destroyed, jump onto the platform hovering between the two turbines to exit through the open door on the back wall of the stage.