Time Flies
Not unlocked yetComplete challenge 4-4
Bullet Hell
Not unlocked yetComplete challenge 4-5
Spike Gauntlet
Not unlocked yetComplete challenge 5-1
Spike 'N' Speed
Not unlocked yetComplete challenge 5-2
Death Trap
Not unlocked yetComplete challenge 5-3
Laser Bombardment
Not unlocked yetComplete challenge 5-4
The Final Challenge
Not unlocked yetComplete challenge 5-5
Hard As Nails
Not unlocked yetComplete stage 1 under HARDCORE mode
Super Hard
Not unlocked yetComplete stage 2 under HARDCORE mode
Hard On
Not unlocked yetComplete stage 3 under HARDCORE mode
Die Hard
Not unlocked yetComplete stage 4 under HARDCORE mode
I'm So Hard
Not unlocked yetComplete stage 5 under HARDCORE mode
TOTALLY HARDCORE!
Not unlocked yetComplete the game under HARDCORE mode