The first thing you will want to do is fix the batplane so it will hover, and you will receive a wealth of studs. You will then need to go to the right at the first building and wreck some things to build an elevator and a railing to get up there. Of course, this elevator doesn’t go up that high, so hop over the fence to the right.

There are a lot of buildings here that have canisters and other rewards in them, but you can’t get them now.

You can wreck some stuff to build a car, which means you can go over any toxic waste pool to get studs. As far as I know, that is about all you can use this for. Continue right, and you will chase but not catch Killer Moth. He keeps his bad guys after you, though.

You may notice a certain alleyway near a phone. If you smash the things in that alley, you can build a fan. Of course this is one of those fans that can take you up to another level. The only way to make the fan turn on is to smash the phone and pull the lever. Use the gust to get up another level, and work you way left. Jump to the railing on the boarded up area, and smash everything until you can make the spinner.

Robin needs to spin the spinner while Batman stands in the elevator. Switch characters at the right time, and Batman can get the Demolition Suit, and he can blow up the façade of the building below. If you smash everything in there, you can build an oven that will make you a birthday cake that you can smash for even more studs. By the way, this is one of three cakes that have to be found to get a canister, but you won’t be able to get them until Free Play. Yes, that is too bad.

Run left back to the corner by some shiny boxes. When these are blasted, you can build a toxic waste sucker that will clear the way, and three purple studs will be revealed. Get the studs, and destroy the four shiny manhole covers while you’re at it. There won’t be any rewards in there just yet, but just you wait.

Go ahead and blow up the burning vehicle that is blocking the entrance to the next area.