Unlock the following cheat options by performing the corresponding tasks:

CHEAT OPTION - HOW TO UNLOCK
Infinite health - Collect all 60 skulls.
One hit kills - Collect all 60 turtles.
Ship does not take damage - Collect all 60 seeds.
The Wild Things will not eat you - Collect all 60 bee hives.
Treasures appear when holding Select - Collect all 60 geodes.  

ACHIEVEMENT - HOW TO UNLOCK
Stranger (75 points) - Beat the game on Easy or higher.
Hero (90 points) - Beat the game on Normal or higher.
King (100 points) - Beat the game on Hard.
Friend of Alexander (5 points) - Collect 25 Turtles.
Friend of Ira (5 points) - Collect 25 Geodes.
Friend of Judith (5 points) - Collect 25 Seeds.
Friend of Douglas (5 points) - Collect 25 Honeycombs.
Friend of Bull (5 points) - Collect 25 Skulls.
Friend of KW (5 points) - Collect 25 Owl Eggs.
Friend of Carol (5 points) - Collect 25 Houses.
Veterinarian (10 points) - Collect all Turtles.
Geologist (10 points) - Collect all Geodes.
Green Thumb (10 points) - Collect all Seeds.
Beekeeper (10 points) - Collect all Honeycombs.
Hamlet (10 points) - Collect all Skulls.
Incubator (10 points) - Collect all Owl Eggs.
Real Estate Mogul (10 points) - Collect all Houses.
Nova (5 points) - Find 5 Stars.
Supernova (10 points) - Find 20 Stars.
Star Cluster (10 points) - Find 40 Stars.
Galaxy (10 points) - Find 65 Stars.
Universe (20 points) - Find 95 Stars.
On Fire (10 points) - Defeat 250 Fireflies.
Greased Lightning (15 points) - Defeat 25 Lightning Bugs.
The Cleaner (20 points) - Defeat 100 Shadow Creatures.
Jack of Hearts (10 points) - Earn 4 Hearts.
King of Hearts (15 points) - Earn 7 Hearts.
Ace of Hearts (30 points) - Earn 10 Hearts.
Three Square Meals (20 points) - Be eaten by three different Wild Things.
Worst King Ever (10 points) - Allow three different Wild Things to fade into oblivion.
Allergen (10 points) - Cause three different Wild Things to sneeze.
Gymnast (5 points) - Power-swing from three bars.
Demolitionist (10 points) - Kill five enemies with a firefly bomb.
Captain (25 points) - Complete a ride with Carol without crashing.
Commodore (25 points) - Complete a Sailing mission without crashing.
Glass Houses (10 points) - Start a Dirt Clod Fight with multiple Wild Things.
Wild Rumpus! (10 points) - Kill 15 enemies in a row in melee without taking damage.
Follow the Bull (20 points) - Complete 'Arrival'.
Explore the Island (20 points) - Complete 'Road to Nowhere'.
Escape the Cave (20 points) - Complete 'The Cave'.
Plug the Rifts (20 points) - Complete 'Canyon River'.
Rescue Ira (30 points) - Complete 'Seasick'.
Go to Nowhere (30 points) - Complete 'Rebellion'.
Survive the Destruction (30 points) - Complete 'Crumbling Island'.
Find a New Island (40 points) - Complete 'Old Willow'.
Reach the Ocean (40 points) - Complete 'Setting Sail'.
Find Alexander (50 points) - Complete 'Below the Roots'.
Leap to the Moon (50 points) - Complete 'A Trip to the Moon'.