There's a minikit indicator pointing straight in front of the Jokerbot's face. I can't tell if the minikit is the remains of his face (the red and white "u" shape after Joker falls out) or if it lands in the middle of the ground.
Either way, I can't for the life of me figure out what it is I'm supposed to do, with my only cluelessness falling in the silver metal box in the front right of the screen (no Batman bomb suit) which disappears during the initial phases of the battle.
Thanks in advance for any help :)
--- Recent 100% Trophies Achievements: - Lego: Harry Potter, Final Fantasy XIII
Also once you unlock the penguin, he lets out little penguins with bombs. they blow up silver blocks. if you have done like me and unlocked the lego mini level (lego gotham city) thats where it first explains it. I'm at 95% complete just tracking down the last few gold bricks.