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