you have to get the spider robots to get in the teleporter

use a flying person like iron man or storm to fly over the teleporter while a spider robot is fallowing you.when the ultimo picks it up it will blow up. then teleport yourself and hurt mandarin.Continue to do this until he comes to the ground.

the above answer was a little off, once the spider robot is folowing you wuickly kill the
ultimo and have the spider robot teleport in to blow up the machine teleporting the
ultimos back down P.S it works better wid 2 people arcade mode