The same player builds a combat monster, then is complaining combat is boring because it is too easy, but as soon as a non-combat scenario that his character isn't built for crops up, he flat out says "Well, this is no good, i can 't do anything, i'm going to play a computer game".
This is why I always warn people who seem to be intending to create a combat-heavy character, that combat is a fairly niche factor in Shadowrun, and probably not near as omnipresent as they're used to, and that unless they take up some auxilliary skillset, they're likely to be unable to do much of anything most of the time.
How to engage someone like that? Explain this to him when he complains. And have him experience it, while seeing others having fun with what are probably also auxilliary skillsets, and hopefully pick up a few points in something non-combat as realisation dawns.