Here is our Mighty Eagle Total Destruction video walkthrough for Angry Birds Bad Piggies level 21-10. (If you’re looking for the 3-star walkthrough video, click here.)
Play just like the 3-star video: Detonate the TNT with a lofting Boomerang bird, then topple the left tower with a White bird. Leave the sardine can amongst the rubble on the left side. If you have an alternate strategy please feel free to leave a detailed comment below.
I knocked a little off of the top with the boomarang bird, then put the can between the first and second structures.
Launch the Sardine Can in a high arc to have it land between the two structures.