Batman: Gotham Knights

You head to the GCPD first, asking for Gordon's help in the form of the Bomb Squad. They haven't seen the Joker's broadcast, but he agrees and they follow you. You lead the Bomb Squad into Arkham's basement where they find the Joker's explosives. Suddenly, you hear a bang and are blinded by a bright flash.

"Mistah J, Mistah J! He brought oddahs!"

Before you can regain your bearings, you remember the Joker's warning about coming alone. The bombs explode.