Pig Bang 1-28 is the 28th and 3rd-to-last level of Pig Bang. Pig Bang level 1-28 is pretty difficult.
Two rings are considerably hard to break through.
One strategy is fire the Blue Bird into the top of the outer circle, splitting early to spread out the damage. Breaking the circles into smaller pieces helps it to collapse inward onto the pigs. If necessary, use the Lazer Bird to target your next attack through wooden blocks.