Tap the screen to increase the speed of the countdown timer.
Layout
The enemies all shoot in a similar pattern and have identical behavior. This will always create safe locations in each pattern. Wait for a safe opportunity before firing back. Enemies will try to push you down. Do not keep your ship at the bottom of the screen. Remain in the bottom third area to give yourself space to dodge their shots and the enemies themselves. You will also have room to maneuver for better shots. The closer you are to an enemy, the faster your missiles will take them out.
Time Cheat
When your character has been killed you will recieve a free gift, this will only happen once every six hours. You can bypass the wait time by setting the time on your device ahead six hours. This can be done as many times as you desire to get the free gifts but remember that once you set the time of your device back to normal you will not recieve another free gift until six hours after the last time you set your device to.
Weapons
Weapons are not purchased permanently. Instead, they will only last for two hours. Only spend your coins on the best weapons. Consider using the Quad Guns if possible. Choose a gun that suits your play style and repeatedly purchase it to use it skillfully. You do not have to purchase all the previous weapons to unlock a new one. Weapon upgrades and power-ups that are collected may change your current weapon. However, collecting power-ups is useful because they increase the chance of getting a sidekick.