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