Here is the full list of all 42 Viking Heroes achievements.
Revive the Living Tree.
Visit the World of the Dead.
Visit the Magical Forest.
Build a Flying Ship.
Complete a level without using boosters.
Defeat the Sorcerer.
Gain access to five taverns.
Activate the magic lift.
Create a magic coconut.
eet the Living Palm Tree.
Collect 1,000 gems.
Create a magic pinecone.
Collect 1,000 units of iron.
Meet the wise tree.
Complete 30 levels with 3 stars.
Create a magic coral.
Use a booster 100 times.
Encounter 30 patrolling enemies.
Collect 1,000 units of gold.
Meet the underwater tree.
Enter the whirlpool.
Assign 5 tasks at the same time.
Collect 1,000 units of wood.
Create a magic acorn.
Meet a Living Tree.
Collect 1,000 units of food.
Complete 10 levels with 3 stars.
Feed Jormungandr.
Set sail.
Collect 100 units of iron.
Collect 100 gems.
Defeat the storm spirits.
Encounter a patrolling enemy.
Cancel 30 tasks.
Cancel a task.
Gain access to the tavern.
Collect 100 units of gold.
Collect 100 units of wood.
Free the prisoner.
Collect 100 units of food.
Use a booster for the first time.
Complete a level with 3 stars.