Chapter 9: Research and Development - Lego Batman 2: DC Super Heroes
After the scene, you'll be thrown in a boss fight immediately, after the Evil Receptionist.
First, destroy the Lex Luthor logo where the boss is standing on. Then, assemble the pieces so Batman can change to his Power Suit. Use the power suit's bombs to take out the boss's hearts. For every heart taken, the boss will call in reinforcements. After dispatching the reinforcements, the boss will jump back and turn around while scattering projectiles. Wait for it to stop spinning before targeting it with your bombs. Repeat until it is defeated.
Even his receptionist is evil
Once done, have Superman melt the golden part of the capsule containing a mini-kit to the left. Then, stand in front of the green wall and use his X-ray vision to fix the power pipes and enable the escalator.
Continue upstairs then destroy all the silver pieces. Reassemble the parts to fix the lever. Pull it down to call the elevator. Ride it up to the upper level. Destroy both pieces then assemble the parts so Batman can change to his Electricity Suit.
Drain the power in the middle to deactivate the kryptonite field. Proceed to the right and have Superman melt the golden outlet cover. Charge it up with Batman then change to his Power Suit. Destroy the silver piece beside the outlet. Shoot a bomb inside the conveyor belts to power off the next kryptonite barrier.
Continue to the right and carve open the golden plate to activate the elevator. Proceed to the next level and destroy the golden lock on the vault.
Assemble the pieces then change to Batman's Sensor Suit. Operate the valve in the middle then press on the switch to the right to destroy the target and the guards that will respond. Repeat this two more times to finally destroy the black wall and force the robots to break the glass open. Destroy them then ride the current up.
Continue to the right and destroy the golden parts to stop the heavy kryptonite flow. You may need to fly near the ceiling the destroy the rightmost part. In the second machine, pull the handle then destroy the mechanism behind it. Assemble the pieces on the ground to create a lever. Activate it then switch the Batman.
Pull yourself up using the grappling handle then make your way to the right. Destroy the pieces to change into the Bat Suit. Return to the third machine and destroy the glass panel so Superman can pass.
Destroy the rotating Lex Luthor logo then step on the switch. Switch to Batman then glide to the other side. Destroy the bots and remove the glass door. Activate the switch to power off the kryptonite field. Carve the golden wall open then go through it to reach the next area/ checkpoint.
Destroy all the enemies then examine the green wall. Activate all the pistons to open the door. Destroy the table in the middle and reassemble it to become control seats.
Take your seat to control one of the robots. You'll be fighting the LexBot Prototype next. This is an easy battle; keep distance from it and wait for it to charge. Before it hits you, move away then attack it. Repeat it until it' defeated.
Lex Bot 2000
Once done, the scientists will attempt to turn the valve to call in reinforcements. Kill them before they do; otherwise, turn the valve off yourself. Continue to the right and destroy the two panels using the Bat Suit's Sonic Gun. After that, destroy the golden wall. Ride the elevator next to complete the mission.