|Description||Reach Level 20 using only missiles|
|Orb Points||500||Orb Coins||5|
This achievement is fairly self-explanatory. However, starting out can be a little confusing.
First, the player must crash their ship (losing a life) into one [or more using the respawn immunity] of the enemy aliens on level 1 until the shield power-up drops. Collect it and continue to ram the enemy aliens on level 1 until you collect a concussion missile drop. Be careful not to lose your shield.
After level 1, crashing into enemy ships is not advised because they have more health. The player does not need to try and kill all enemy aliens with missiles but it is recommended to kill a few in each level to collect more missiles, shield power-ups and nukes in levels following the boss levels.
It is advised to collect all nukes to use against the fifth boss and mini-boss on levels 19 and 24.
Level 7 and onwards, mines appear in levels and can kill enemy aliens, saving the player's missiles and also awarding the player with power-up drops (and also points, strangely enough).
Collecting the extra life, cloak, power-up attractor [aka magnet], and invincibility power-ups is strongly advised.
Lastly, if using the mouse to steer, try not to accidentally click the left mouse button, right mouse button, and the mouse wheel. All three with fire the basic energy weapon [aka bullets]. If using a laptop with a touch pad, try not to touch the touch pad, when firing missiles.
The achievement Frightening can also be earned with this achievement. Wait until level 20 to use the lightning cannon.