Our strategy for Danger Above level 6-13 is to fire the first Yellow bird through the side of the top structure. It is necessary to knock the stone down, since it will pop the mustachioed pig in the far right. Aim the next Yellow bird downward and black through the side of the first structure, causing it to collapse and popping all pigs within. Score a direct hit on the remaining mustache pig to finish. The score in the video below is 83,050.