Theme 22-15 is the fifteenth level of the last world of the episode of Bad Piggies.
One strategy for Angry Birds Bad Piggies level 22-15 is to send the Red Bird towards the top pig sitting on the stone blocks. Then fling the Orange Bird against the TNT, and trigger upon impact. The resulting explosion should clear all the pigs on the left. Finally, send the second Orange Bird towards the Moustache Pig, and trigger upon impact. Flying debris should destroy the King Pig above.