Planetarium Love (プラネタリウムラブ) is the fourth stage in Morningstar Isle.
A Sir Metal Seal is spawned after 200f.
Lineup: Miracle Performance, Biohazard, Bony Bone, Modern Cat, Catasaurus, Hoopmaster, any other critters/meatshields.
Upgrade your wallet to Level 3, wait for Sir Metal Seal to get close to your base, then spam Modern, Catasaurus, and Hoopmaster. From there, it should be an easy win.