How do you defeat Sunnycide? - Answers

To defeat the Sunnycide, you must crack open it's eggs and yoshis will come out and start pushing a chomp rock that was perched on a cliff above the sunnycide, one yoshi can't push it by itself, so five yoshis are needed, once five yoshis are pushing the chomp rock, the rock will roll of the cliff, land on the sunnycide and tip it down onto it's back, exposing it's weakspot (it's bandage-covered tongue), then's your chance to attack! The Sunnycide will be able to get back up, before you repeat the cycle and do a total of 480 damage to it.