Here is the full list of all 40 Viking Brothers 4 achievements.
For earning every achievement.
For unlocking five taverns in the main adventure.
For dispelling a storm cloud 30 times.
For restoring the glory of the worlds of Edda.
For canceling 30 tasks.
For finding the Hammer of Creation and Anvil of Worlds.
For dispelling darkness.
For assembling the Divine Bonds.
For completing 30 levels with three gold stars.
For solving the central gate puzzle.
For destroying Mittalmar's magic dome.
For gathering 1,000 pearls.
For completing a level without using a booster.
For meeting a patrolling enemy 30 times.
For earning three stars while playing Chipmaster.
For gathering 1,000 units of wood.
For finding the first fragment of the Divine Bonds.
For gathering 1,000 units of stone.
For acquiring information about the stolen artifact.
For using a booster 100 times.
For gathering 1,000 units of gold.
For finding the underwater stalker.
For completing 10 levels with three gold stars.
For gathering 1,000 units of food.
For restoring the magic well.
For acquiring the underwater breathing potion.
For encountering a patrolling enemy.
For gathering 100 pearls.
For getting rained on 100 times.
For using a booster.
For gathering 100 units of stone.
For giving 300 tasks to the Vikings.
For persuading Loki to join the cause.
For gathering 100 units of gold.
For gathering 100 units of wood.
For unlocking a tavern.
For gathering 100 units of food.
For giving the Vikings five tasks at once.
For canceling a task.
For completing a level with three gold stars.