Complete Stage 1
Complete Stage 2 (without warp).
Complete Stage 3
Complete stage 4
Complete Stage 5
Complete Stage 6
Complete Stage 7
Complete Stage 8
Complete Stage 9 (without warp).
Complete Stage 10
Complete Stage 11
Complete Stage 12
Complete Stage 13
Complete Stage 14 and the Boss!
Complete the game with 15 or more remaining lives
Get 100.000 points!!!
Get 200.000 points!!!
Get 400.000 points!!!
Become invincible