Clear the game once.

Clear the game on HARD.

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 in under an hour.

Make it to a boss room without getting damaged.

Defeat the 8 bosses without your helmet on.

Defeat 1000 enemies.

Clear the game without continuing.

Clear the game without dying.

Clear the game without getting damaged.