Beat the default highscore
Reach level 2
Reach level 3
Reach level 4
Reach level 5
Reach level 6
Get 100,000 points
Get 200,000 points
Get 300,000 points
Get 400,000 points
Get the best weapon
Get 5 lives
Beat the first stage without killing enemies (don't die)
Beat the first and second stage without killing enemies (don't die)
Beat the game
Beat the game with at least 5 lives remaining
Beat Level 1 on Hard Mode
Beat Level 2 on Hard Mode
Beat Level 3 on Hard Mode
Beat Level 4 on Hard Mode
Beat Level 5 on Hard Mode
Beat the game on Hard Mode