Ra's Al Ghul Sandstorm boss fight - Batman Arkham City Episode 32

In this video of Batman Arkham City, I return after having just completed the trials in the Chamber of the Demon. My next task is to return to Ra's Al Ghul to collect my reward. I make my way through the door and up the stairs where I am greeted by Talia. She invites me to complete the final task - to kill her father Ra's Al Ghul. Batman however, has only come here to collect a sample of his blood. Ra's Al Ghul throws himself into the Lazarus Pit which seems to revive him of his afflictions. A huge battle in the desert ensues, where Batman has fend of legions of men along with a huge genie like entity. After a failed attempt I try again and this time I have better luck. I manage to defeat the hordes but Ra's has one final trick, to threaten Talia his own daughter. Using the reverse Batarang I defeat him and finally obtain the sample of his blood. The episode concludes with calls from Oracle and Robin who inform me that hundreds are now infected with Joker's blood. My goal in the next episode is likely to be to find Mr Freeze to complete the antidote.