Collect 100 pickups.
Collect 100 shields.
Complete 5 levels with sounds and music muted.
Complete 5 consecutive non-easy levels with only 1 life remaining)
Pass a level without taking damage.
Complete 3 consecutive levels without any mistakes.
Complete 5 consecutive levels without any mistakes.
Complete 10 consecutive levels without any mistakes.
Complete 20 consecutive levels without any mistakes.
Complete the game in normal mode.
Complete the game in hard mode.
Complete the game in nightmare mode.
