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