5S. DLC 3: Dark Knight Trilogy =

You'll start off in control of The Joker. Your first task is to head left and smash the boxes you find. These will give you pieces to build a gumball launcher. Use this launcher to take out the police cars in front of you. Once all those are dealt with, a truck carrying more cops will appear. Smash the boxes on this truck to get a rocket launcher. Grab it, hop back a bit, and use the rocket launcher to easily destroy three more cop cars. Keep blasting any other police vehicles that show up. Eventually, a new truck will arrive, this one with silver boxes on it. Destroy these, assemble the missile launcher that appears, hop in, and fire away!

Now you're playing as Batman and Commissioner Gordon. First, head to the nearby lit-up objects and smash them. These pieces will let you assemble part of a crane. Suddenly, some goons will emerge from the sewer! Punch them out, and then use the resulting pieces to assemble an orange hook. Pull this hook down, which will allow you to assemble more of the crane. Next, backtrack into the alleyway. You'll find some pieces there to build a handle. Use this handle to pull down a ladder. Climb up the ladder, then glide across to the right. You'll need to bounce off the awning to reach the Tech Panel. Activate the Tech Panel to open the doors below. Inside, smash the boxes to find the final pieces for the crane. Hop into the crane, hold down [X] to move towards the truck, and then press [B] to lift it off the ground.