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