Here is the full list of all 66 Super Mombo Quest achievements.
Defeat the King of Nightmares
Collect all game coins
Reach the Maleficent Momboland region
Buy all items from Alfred
Rescue the animals in the Volcano
Buy all Philomen upgrades
Store 15,000 crystals
Equip the Belt of Longevity
Store 10,000 crystals
Equip the Ring of Revenge
Equip the Lucky Underpants
Buy the Gentle Combo upgrade
Buy the Lightspeed Dive upgrade
Buy the Punch of Steel upgrade
Rescue the animals in the Pyramid
Equip the Platinum Armor
Buy the Flaming Stomp upgrade
Rescue the animals in the Desert
Rescue the animals in the Maze
Rescue the animals in the Forest
Buy the Rock Shield
Defeat the MegaDrill
Buy all Ursula upgrades
Buy the Reveal Fountains and Totems upgrade
Buy the Volcanic Shield upgrade
Reach the Mechanical Maze region
Collect 200 coins
Buy the Electric Duality upgrade
Equip the Magical Coin
Equip the Guardians' Shield
Equip the Crystalline Piggybank
Defeat the Swine Emperor
Reach the Voracious Volcano region
Rescue the animals in the Tree
Equip the Magic Magnet
Buy the Reveal Nearby upgrade
Defeat the Lasercat
Collect 150 coins
Reach the Desolate Desert region
Defeat the Evil Pigosaurus
Buy the Max Life upgrade
Reach the Prismatic Pyramids region
Equip the Heart Stone
Buy the Extra Slot upgrade
Equip the Crystal of Power
Buy the Natural Boost upgrade
Defeat the Green Smasher
Reach the Towering Tree region
Collect 100 coins
Equip the Grandfather Clock
Buy the Reveal Secrets upgrade
Rescue Adamastor
Reach the Fungal Forest region
Defeat the Pigosaurus
Rescue Ursula
Rescue the animals in the Mountains
Buy the Unstoppable Drive upgrade
Equip the Locket of Renewal
Store 5,000 crystals
Collect 50 coins
Buy the Crystalline Hunger upgrade
Rescue Alfred
Rescue Philomen
Reach the Monster Trail region
Rescue Thoma
Open a chest