After a brief cut-scene, select Batman and put on the Power Suit. This will enable you to destroy objects made of silver bricks. Collect all studs and head on. You will encounter a laser barrier. In order to walk past it, you have to use Batman's explosives on the gate (it is made of silver bricks).
Head upstairs and smash the bricks there. Switch characters to Robin and wear the Techno Suit. Build a tool of the bricks scattered on the floor and summon a robot, which you should use to get access to a machine.
After that, rails will come out of the cave. Switch characters to Batman and use the Power Suit. Hold the correct button and aim at the silver brick above you (the one with Batman logo).
Once the entrance is open, grapple the plug to get up on the platform. Switch characters to Robin, approach the nearby console and keep pressing the correct button.
Go downstairs and collect a token for Batman. In order to get that, first you should destroy the silver objects that protects it (change to Power Suit and use explosives on that). Once you have collect the Sonar Suit, shatter the glass objects nearby.
Now, use Robin's Hazard Suit and collect all the bricks on the ground. Then change to Techno Suit and summon a robot. Send it through the hatch to get the platform on the right, and as soon as you get there head downstairs and extend the bridge for the heroes to pass.
Switch characters to Batman and smash all objects around you (glass objects can be destroyed when you are wearing the Sonar Suit).
After smashing the objects, switch back to Robin and approach the console while wearing the Techno Suit, in order to create a machine. Put on the Hazard Suit and collect the bricks from the floor, then put them inside the machine to create a fan.
Switch characters to Batman and hop up using the fan. When you are on the upper platform wear the Sensor Suit and approach the green wall.
Change the position of two bricks (one on the right and one on the left) in order to make the fuel flow toward rockets. Then grab the handle with any character in order start the flow.
As Batman wear the Sensor Suit and approach the tank on the right, and as soon as the door turns into glass put on the Sonar Suit and shatter it.
After shattering the glass door switch to Robin and put on the Hazard Suit. This is the only way to walk across the toxic sludge inside the tank without hurting yourself. At its other side use the grappling hook to create a way for Batman.
Get to the center of the platform and switch characters to Batman. Use the Sensor Suit to detect silver bricks inside the dark cave. Destroy them with the Power Suit and switch back to Robin. When playing as Robin put on the Illumination Suit and charge it up at the nearby generator. As soon as you do that, jump inside the dark cave and get into the vehicle.
While inside the vehicle, drive into the cave and look for silver bricks. You can search them with the interact button to receive studs. Once you have searched four of them, you will get a token (another suit for Batman).
Collect the token as Batman. While wearing the Space Suit you can destroy gold objects. Approach two such objects and destroy them, and use the resulting bricks to create new objects (the object on the right is only available after completing the mission in the free play, and only when you are accompanied by Green Lantern. More on that can be found in the chapter General tips).
After creating the object on the left side of the platform you will be able to refuel Batman's Space Suit, allowing him to fly around. After that, fly to the platform next to the fueling machine (when you jump press again the jump button in order to start flying).
You can smash all the objects on the platform in order to collect studs. Still using the Space Suit destroy the gold brick object in order to lower the ladder, creating a way for Robin.
Using Batman's Space Suit fly to another platform and cut through the gold brick wall with a laser. The shape of the cut is displayed on the screen - your job is to use direction keys to manipulate the laser.
When the gold wall is down, some bricks get scattered across the floor, which you can use to create a computer. In order to use the computer you need to switch to Robin. The only way to get to the higher platform is to fly there, so use Batman's Sensor Suit. Approach the right edge of the platform and press the correct button. This will create a way for Robin. Switch characters to Robin, use his staff on the socket (hold the correct button), and perform a series of jumps.
Use Robin's Techno Suit and start hacking the computer. While in the virtual reality you will have to unlock three buttons on the floor. Get through the maze, and after using the last button destroy the silver brick that appears there. This way you will get your first character. After that, go down through the maze and smash the first digit. The second one can be reached by performing perfectly timed jumps from one brick to another. Do not stand on the bricks that turn red, so not to fall down into nothingness.
When it comes to the third digit, first you have to learn how do the bricks move. They move in waves, and if you jump at a wrong moment, you will not in get to the other side. The picture shows the perfect moment for the jump. You need to jump when a wave just begins to lower at your side. Now you need to simply run toward the right spot.
After hacking the computer, the machine will put the last piece of the rocket in its place, and you can go to the bridge and fly off.
After a short cut-scene take control over the Batrocket as Batman. Learn the controls, while destroying the ships sent by Joker. At one point, when he sends a special rocket, search for a Minikit floating somewhere in the middle. Shoot at the rocket when it is not moving and avoid it when it is. Also collect power-ups dropped by downed enemies. These will grant you a shield, laser, or a destructive force field.
When you can control a character again, start collecting all studs around. In the central part (on the other side) you will find a gold object to be destroyed by Batman. The hatch contains the Magnet Suit for Cyborg. Approach the force field, as shown in the picture, and use Cyborg's special ability while wearing the Magnet Suit. Thus, you will destroy the obstacle and make the way clear.
After collecting all studs and other stuff, approach the force filed. As Cyborg wear Demolition Suit to destroy silver objects creating the force field.
As soon as a rocket hits the space station, switch characters to Batman, and use his Space Suit to cut through the gold object.
After destroying the rocket, create a flying machine. In order to do that, first you have to create a construction pad for Flash. When it is ready have Flash step inside the circle and press the correct button.
After a brief cut-scene, take control over Cyborg and wear the Magnet Suit. Approach the blue wall, as shown in the picture, and open it. After doing so, you will notice a gold wall. Use Batman's Space Suit, cut through it, and use the resulting bricks to create a machine.
As Cyborg wear the Space Suit and recharge it, then fly to the upper platform. When up there, approach the blue wall, as shown in the picture, and use the Magnet Suit to unlock access to the generator.
Switch characters to Batman and cut through the gold object below using the Space Suit.
Switch characters to Cyborg and fly to the platform on the right (you may also collect the studs by the main gate). If you need more fuel, use the machine below. Eliminate all the enemies and smash all objects in your reach. You should build a mechanism on the circle in the center, which can extend the bridge for your companions.
Use Batman's Power Suit to destroy silver bricks and build another machine in the center. Switch characters to Flash and get on the newly created machine. Thanks to Flash's speed you will be able to overload the generator and open the main gate.