Beat Stage 1
Finish stage 1 without dying (Continues allow for retry)
Beat Stage 2
Finish stage 2 without dying (Continues allow for retry)
Beat Stage 3
Finish stage 3 without dying (Continues allow for retry)
Beat Stage 4
Finish stage 4 without dying (Continues allow for retry)
Beat Stage 5
Finish stage 5 without dying (Continues allow for retry)
Beat Stage 6
Finish stage 6 without dying (Continues allow for retry)
Fully upgrade your weapons
Gain the Shield powerup
Have 5 or more lives
Beat the game without using a Continue
Beat the game without dying
Beat the game without picking up the Shield powerup
Reach the boss in Stage 1 without scoring any points