Get the Spread weapon upgrade.
Get the Barrier item.
Get the Homing Shot weapon upgrade.
Get the Crush Gun weapon upgrade.
Get the Flame-thrower upgrade.
Complete Level 1 on Normal.
Complete Level 2 on Normal.
Complete Level 3 on Normal.
Complete Level 4 on Normal.
Beat the Game on Normal.
Complete Level 1 on Hard.
Complete Level 2 on Hard.
Complete Level 3 on Hard.
Complete Level 4 on Hard.
Beat the Game on Hard.
Complete Level 1 on Maniac.
Complete Level 2 on Maniac
Complete Level 3 on Maniac.
Complete Level 4 on Maniac.
Beat the Game on Maniac.
Finish the game without dying.
Finish the game using only the default gun.
Clear Stage 1 without dying and using only the Default Gun (Hard or Maniac)
Clear Stage 2 without dying and using only the Default Gun (Hard or Maniac)
Clear Stage 3 without dying and using only the Default Gun (Hard or Maniac)
Clear Stage 4 without dying and using only the Default Gun (Hard or Maniac)
Clear Stage 5 without dying (Hard or Maniac)
Gain seven lives.
Win the Game without using a bomb. (Normal or higher)
Win the Game without using a continue.
Win the Game without using a continue on Hard difficulty.
Clear Stage 5 using only the Default Gun (Hard or Maniac)