Clear the game on HARD.
Clear the game once.
Clear the game without using any energy, mystery, or weapon tanks.
Defeat one of every type of enemy.
Defeat the 8 bosses with just your default weapon.
Defeat the 8 bosses without your helmet on.
Clear the game without getting damaged.
Clear the game without dying.
Clear the game without continuing.
Clear the game in under an hour.
Defeat 1000 enemies.
Make it to a boss room without getting damaged.