Complex sentence: He then goes to the University of Cambridge to meet Amara at Tony's laboratory where he informs a Tony Stark A.I. that he plans to take the mantle of Iron Man which he does upon donning a suit of armor.
Split into simpler sentences: He then goes to the University of Cambridge to meet Amara. Later, at Tony's laboratory, he informs a Tony Stark A.I. that he plans to take the mantle of Iron Man which he does upon donning a suit of armor.