Here is the full list of all 16 Trial by Viking achievements.
You have honored Odin this day by accepting his challenge.
You landed all three hits of a melee combo. Nice!
You spirit dashed directly into an enemy, instead of away from it...as a viking should.
You used your spirit dash to do a long jump. A very useful skill.
You landed a brutal melee attack from the air. The little monsters never saw you coming.
You managed to finish a level without getting hit. Not even once.
You managed to finish a level in under a minute. I hope you don't do everything that fast.
You got all of the sunstones in a single run. Now that's how you loot!
You have defeated 100 enemies, and your reputation has spread. They now cower at the sound of your name.
You found every last sunstone in the game. Now to upgrade...
You beat the game! On easy mode... Maybe it's time to try something harder.
You beat the game! On normal mode... Maybe it's time to try something harder.
You beat the game! On hard mode... I wouldn't go any further than that if I were you...
You beat the game! On viking mode... Your place among gods and heroes in Valhalla is assured.
Congrats! You landed your first attack. Now do 50 more.
You found all of the Health Containers in the game. We will have to find better hiding places next time.