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
Deceiving death itself
One after the other!
Babies make you tougher
You're gonna love 'em
Copying enemy movements
A new challenger appears!
It gets spiky
Like a blue hedgehog!
Gotta shoot fast
Button 2 is more useful now
He lost his drill for...
You're feeling tough
I'm gonna catch you!
He also wants to hit
At last you can watch it
Helps hitting your target
Your actions are under control
Speed up!
Take me seriously!