Missions to do for goals

level 5 or higher at the Ublish's Lair
level 2 or higher of the Sewer Cleaner
level 5 or higher at the Trunx's Theatre
level 2 or higher of the Priscilla
level 5 or higher at the Greedy Gertrude
level 6 or higher at the Bumpkin
level 5 or higher at the Circus

Borrow following pets for goals

Chocolate
Simerian