Batman Arkham Asylum - Full Story version (Part 22 Play as Joker)

Special add on to play as Joker in Challenge mode. For stealth challenge, it's just how well you could use your gun & your only one bomb. But for attack mode, It's a pain to push the button really hard for critical strike. You may gain double of your whole combo score if you manage to kill the last guard by Joker's powerful gun.