The third installment of Amazing Spider-Man’s “Marvel Legacy” reboot ends the initiative’s first first arc (“The Fall of Parker”) in similar fashion to the first two: another tidy  well-executed done-in-one story from Dan Slott and Stuart Immonen that spends the bulk of its time laying groundwork for the year (or  more appropriately when Slott is at the helm  years) ahead  rather than bombarding the reader with an over-the-top  big “event” feel