Galactic Ravager

This is the last achievement to perfect this game. You need to beat Level 1-14 to unlock this achievement. Note that you can restart from the last level you reached by choosing Map in main menu.

It is quite diffcult if you play this game normally. But there is a trick, that is try to get a strong weapon to reach as far as possble in a level, after dying and re-spawning, put yourself at the top corner (left or right as you wish), you can also move a little bit up and down near the corner. In this way, you will avoid being shot, but you might be crushed by enemy planes some times. Therefore, do not abuse the trick from the begening, which will lead you to failure for most levels.