Walkthrough: Atop the throne of Xgard is where Ultron Sigma sits. When our heroes finally reach him, he will initially summon Thor to fight for him. Thor will be pitted against Spider Man and Morrigan. Thor is resistant to most damaging attacks and has powerful moves of his own, so be ready for a tough bout even though it's a two-on-one. Once Thor is defeated, Ultron Sigma will step up.
Ultron Sigma will have one of his Xgardians with him in battle, and he'll have the Reality Stone and Space Stone at his side to constantly regenerate his hyper combo gauge. However, unlike you first fight with him in the beginning of the story, Ultron Sigma can be defeated since Captain America and Strider Hiryu have the Mind Stone and Power Stone at their disposal. If you think you are good with combos, stick with the Power Stone and try to pin Sigma in a corner. If you aren't so confident in making combos, then definitely go with the Mind Stone. The easiest way to defeat Ultron Sigma is to first defeat Xgardian, leaving Ultron Sigma to fend fo himself without having the chance to regenerate by tagging out.
Playable Characters