Question: "How does Yngwie pick I Am A Viking" if he doesn't use true alternate picking?
Answer: The Lone Note Exception, and some cross-picked outside alternate picking.
I'll do a more detailed standalone video on this and the Lone Note Exception later, but for now... If you've tried video 3 in this series or studied Chapter Six of Neoclassical Speed Strategies, this will just be a matter of application rather than deep study but, for the uninitiated, it might take a little while to get used to this unorthodox fusion of picking approaches. Please see videos 3 and 4 to get a little taste of what The Lone Note Exception is all about.
Seven Days Of Picking Sequences: The I Am A Viking picking.