Theme 2-21 is one of the first level the Mustache Pig appears. This is the first level with a Mustache Pig boss, known as Mr. Moustache.
3-Star Strategy
Shoot the White Bird's Egg at the leftmost Helmet Pig. Use the next two birds (one Red and one Yellow) to thin out the wall to the left of the next pig. Use the second Yellow Bird to destroy the floor underneath the next two Helmet Pigs, which will kill not only them, but the Mustache Pig underneath it as well. Finally, use the Black Bird to finish off the last Helmet Pig. The unused White Bird awards the player 10,000 extra points.
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