Obtain Mjölnir.

Finish a single level with all three Red Diamonds collected.

Unveil 10 secret areas.

Clear an Arkanoid Chamber in one shot.

Retrieve your heart in the last second before it times out.

Fill your heart timer to the maximum.

Lose your heart 99 times.

Scare off Huginn and Muninn 10 times with Mjölnir.

Die within 10 seconds of starting a level.

Dispatch all 10 Snakes that threaten the Stranger in level 1 – Birthday Boy in a single shot.

Dispatch 4 Spikey Snails in a single shot.

Shoot off 8 Viking Bug helmets in a single shot.

Destroy 10 Bug Eggs in a single shot.

Smash 6 Frogs with a single slam.

Complete a regular level without activating any checkpoints.

Dispatch a total of 1,000 non-respawning enemies.

Defeat the Stone Crusher.

Defeat the Bee Queen.

Defeat the Tatzelwurm.

Defeat the Clockwork Golem.

Defeat the Kraken.

Defeat Loki.

Defeat Jormugandr.

Collect every Red Diamond in the game.

Collect every Blue Gem in the game.

Obtain all ability upgrades from the shops.

Collect every collectible in the game.

Defeat the Stone Crusher without getting hit.

Defeat the Bee Queen without getting hit.

Defeat the Tatzelwurm without getting hit.

Defeat the Clockwork Golem without getting hit.

Defeat the Kraken without getting hit.

Defeat Loki without getting hit.

Defeat Jormugandr without getting hit.

Defeat every boss without getting hit.

Complete Challenge I – Lofty Leaps.

Complete Challenge II – Meticulous Marksman.

Complete Challenge III – Soaring Spire.

Complete Challenge IV – Floorless Frivolty.

Complete Challenge V – Cubic Companion.

Complete Challenge VI – Critter Coliseum.

Complete Challenge VII – Zany Zips.

Complete Challenge VIII – Sleet Street.

Complete Challenge IX – Shifty Shafts.

Complete all Challenge levels.