South Hamerica 1-12

 is the twelfth level of South Hamerica.

Strategy
Sling Chuck to the wood block that is under a bunch of round stones (boulders) so the stones will fall off and squash the pigs. Then, sling Matilda to the Foreman Pig's position and drop a bomb on him, then Foreman Pig will die and Matilda will bounce off and defeat the Medium Pig above.