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