Complex sentence: At the Giants Stadium dates, "Staring at the Sun" was performed by Bono and the Edge on acoustic guitar only, becoming one of the show's highlights; it would be performed this way for most of the rest of the tour.
Split into simpler sentences: At the Giants Stadium dates, "Staring at the Sun" was performed acoustically by Bono and the Edge. Becoming one of the show's highlights, it would be performed this way for the rest of the tour.