Bosses
When facing a Boss, watch the direction of its laser. Keep your jet out of its way. Tap on the boss to shoot it as fast as possible until he begins to fire his laser again. Although your attacks will do small amounts of damage, with enough repetition it will be enough to defeat a Boss.
Credits
If you have not made an account yet, tap the speech bubble button at the main screen. You will earn 5,000 free credits as well as ability to earn more free medals and items in the future.
Flying
Avoid getting hit to fly longer. Although you can attack aliens, it is better to focus on evading them and obstacles. Watch your ship instead of your shots and targets. The longer you fly, the higher your score. Make sure to accurately swipe the right or left arrows when they appear to turn correctly. The most dangerous obstacle are bombs. Swipe and change the direction of your ship to avoid them.
