There are 12 achievements worth a total of 200 points
Defeat your 1000th enemy.
Defeat a Boss without getting damaged.
Clear the game once.
Defeat every type of enemy.
Defeat the 8 Bosses with the Mega Buster.
Clear the game 5 times in 1 day.
Clear the game by using the least amount of Weapon Energy possible.
Clear the game in 60 minutes or less.
Clear the game without continuing.
Clear the game without dying.
Clear the game by defeating the fewest number of enemies possible.
Clear the game without using any Energy or Mystery Tanks.