Where is Ra's Al Ghul in Lego batman villain hunt Ds?

When you finish doing the roof top task and now you should be on the head of the snowman with the ice cream on its hand make the hand go down useAlfred and glide to the other side fight the two penguin goon use robin's magnetic suit and step on the three red buttons and build the 4 blue LEGO and make the bottom smoke stop go to the hero access panel and the gate will open blow up the red and black thing with the wire and something will fall onto the gas thing and step on the red button and the small gate near a red and black box go inside the square hole and blow up the red and black hexagon floor and punch black mask!!!