Here is the full list of all 40 Viking Heroes 2 achievements.
Encountered an enemy patrol 30 times
Cooked soup 50 times
Completed a level without using any boosters
Fired the catapult five times
Tamed the volcano
Returned the magic flute
Restored the chameleon statue
Gained access to five taverns
Earned three stars while playing 30 levels
Entered the Dream World
Collected 1000 units of gems
Restored the fish statue
Restored the spring
Exposed Loki
Restored the toucan statuee
Collected 1000 units of gold
Repaired the chief's hut
Made 50 transformations at the Stonehenge
Collected 1000 units of stone
Met Everand's aunt
Used a booster 100 times
Defeated the T-Rex
Collected 1000 units of wood
Earned three stars while playing 10 levels
Cancelled 30 tasks
Saved the dinosaur egg
Collected 1000 units of food
Entered the lost world
Encountered an enemy patrol
Collected 100 units of gems
Gained access to one tavern
Collected 100 units of gold
Assigned five tasks at the same time
Collected 100 units of stone
Saved Ratatoskr
Collected 100 units of wood
Collected 100 units of food
Used a booster
Cancelled a task
Earned three stars while playing one level