Complete the game on Valhallan Difficulty (hardest).
Complete all Feats in the game.
Complete all Feats in Asgard Besieged.
Maximize Thor's Odinforce.
Maximize Thor's Health.
Complete all Feats in Muspelheim.
Complete all Feats in Vanaheim.
Complete all Feats in Niflheim.
Complete all Feats in Asgard.
Complete the defense of Asgard with 75% Morale.
Prevent the Scabrite Bomb from detonating without using any tap or charged Elemental Powers.
Crash the Core Drill within 4 minutes of landing on it.
Stop the Resonator Beams in the Smelting Room without getting hit by them.
Extinguish 10 Warlord flames with Wind Powers.
Acquire all Valor Upgrades.
Continue playing to unlock this secret achievement.
Complete River Barge area with Mire Giant at 40% Health or better.
Open the Cave of Ages within 4 minutes.
Quickly obliterate 30 Frost Giants during the first battle on Niflheim.
Defeat a giant enemy without taking any damage.
Complete the game.
Unlock all costumes.
Unlock all Lightning Colors.
Complete Muspelheim.
Knock 30 enemies into abysses on Muspelheim.
Kill 4 or more enemies with a single melee attack.
Complete Vanaheim.
Reflect 3 of the War Beast projectiles.
Complete Niflheim.
Destroy the Jötun Ice Bridge.
Complete Asgard.
Kill 10 Jötun Invaders within 30 seconds.
Acquired an upgrade.
