Here is the full list of all 23 Walhall achievements.
You're the real champion!
Thank you for playing!
REAL blue hedgehog!
As if it wasn't hard enough
Babies make you tougher
One after the other!
Deceiving death itself
You're gonna love 'em
Copying enemy movements
Like a blue hedgehog!
A new challenger appears!
Button 2 is more useful now
Gotta shoot fast
I'm gonna catch you!
He also wants to hit
He lost his drill for...
It gets spiky
You're feeling tough
Helps hitting your target
Your actions are under control
At last you can watch it
Speed up!
Take me seriously!