Lego Batman 2: DC Superheroes Walkthrough Part 29 – Research and Development, Part 3
Drop down from the top to beneath the vent. There are some assembly pieces for you to work with. Put together the switch and throw it to lower the grappling point to the right. Now have either Superman or Batman smash the Lex Corp insignia to the right of the second vent. Follow that up with having Batman grapple through the Kyrptonite-powered force field. Head across the platform and drop down to the far side. There you will have a pair of robots to deal with before anything else. Once they are down, smash the Lex Corp insignia and the 2 crates with spinning lights. This will reveal a suit changer for Batman: The Bat Suit. Head back up onto the platform above the vent. Now use the Sonar Gun on the clear blue bricks in the middle of it. This will seal up the Kryptonite there and let Superman get past.
On the opposite side of the third vent you will notice the large spinning Lex Corp Logo with Gold Bricks. Use Superman's Heat vision on it to break it to pieces. Smash them for chips but it will also reveal a floor switch that someone needs to stand on: Superman. Have Batman go to the part of the floor that is raised and glide through the radiation field. On the far side you have a pair of Robots that will attack you. Once they are down, head for the top left and use the Sonar Gun on the Clear Blue bricks there. Once inside that room head for the back left where you will find a switch. Throw it to cover up the Kryptonite, clearing Superman's way over.
With Superman there it is time to get moving forward. Head directly to the Gold Brick wall to the right. Use his Heat Vision to cut out the shape in it to move on forward. On the other side of the tube you cross you you have a few henchmen and robots attack you. Defeat them and you will be able to easily save here just to the left of the stairs up to the X-Ray Wall. Interact with the 8 pieces of the wall to open it up and move into the next room.
In here, smash up the center console to get some assembly pieces. They come together to form 2 chairs. Get into one and it is revealed that you can remotely control one of the robots in this room. Head over to the right and it is time to engage in some fighting
Lexcorp Prototype Robot
This is a very simple fight but it does take some patience. This robot seems invulnerable and it is, most of the time. It only has 2 attacks though: to swipe at your robot and to charge at it. To hurt it, you need to get it to charge at your Robot and miss. It must hit a wall for it to become dazed and vulnerable. Once it is you can get a hit in on it. You need to get through all 4 hearts to best it.
Once the robot is down, the pane of glass will open up to admit you into the former arena. Deal with the Scientists if you would like but head for the back part of the room. Superman should fly above the wheel valve to grab a collectible up there. After that, spinning the valve will get you Lexbots. The robots will keep coming until you close the valve again. Have Batman change into the Bat Suit that is just to the left of where the rival controller was.
With that all dealt with, head over to the right where the other robot controller was. Inside, in the back of the room, you will find a pair of clear blue brick panes that you can smash with the Sonar Gun. Blast the bricks and smash the mechanism behind them on both to reveal the way forward. The next is to use Superman's Heat Vision to cut through the Gold Brick Wall in front of you now.