Objective 1: Cut the Gold LEGO Wall
At the start of the level, use Cyborg to cut through the gold LEGO wall in front of you. Take a moment to equip either Lex Luthor or Robin with a Hazard Suit. It’s time to find some Attract pieces to fill the Attract Station that was hidden behind the gold LEGO wall. Check behind the Attract Station to find a Purple Stud.
Before you wander too far, don’t forget to smash the Lex Luthor prop in the southwest corner of the starting area.
Lex Luthor Smash Challenge: 1 / 3
Objective 2: Hack the Computer
Head to the left and use explosives to destroy the silver LEGO tanker trailer. Collect the Attract pieces that spill out and continue to the left.
Hack the computer terminal that you find in the far left corner of the level. After you do, a volatile chemical reaction occurs. It’s bad on its own, but it also attracts the attention of Brainiac, who quickly deploys goons to interfere in the cleanup.
Your computer skills have also drained the vat to the left of the computer. Robin’s double jump is more than adequate to jump into the now empty tank. Do so and claim The Joker Card for yourself!
The Joker Card
Objective 3: Turn the Valve
On the right side of the level, look for the grapple handle on the wall. Grapple it to pull down the wall’s facade, allowing you to access the magnetic LEGO within. Don’t forget to pick up the Attract pieces!
Climb the magnetic wall and jump the small gap to the right. Here, you find quite a few studs, as well as a Lex Luthor prop.
Lex Luthor Smash Challenge: 2 / 3
After climbing the magnetic wall, smash up the LEGO pallets and switch to Robin. Use the wall jump strips to reach the level above. Once there, locate a valve on the left side of the chemical vat. Brainiac once again drops off some baddies to get in your way.
Ignore the bad guys for a moment. Instead, jump into the now empty vat to the right of the valve. Inside you find the Red Brick!
Red Brick
Objective 4: Take Out Brainiac
Jump down the left side onto the now-solidified chemicals. Pick up the Attract pieces there. Also, feel free to knock off the small blue LEGO device on the edge of the tank. Your partner can build this into a ladder to join you if you wish.
To the left of the tank, you find the last Lex Luthor prop. Smash it!
Lex Luthor Smash Challenge: 3 / 3
Head back to the Attract Station and deposit all of the Attract pieces. This creates a mega-sized science experiment that can be used to take out Brainiac! Use the nearby gravity turret to move the LEGO mints into the giant LEGO bottle of liquid. The result? A volatile explosion of soft drink justice!