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