* Pulsator capsules and fire power will automatically be increased after a period of time, so do not hesitate use the smart bomb if you are in a dangerous situation. Always choose the Thunder Cannon as this is the most powerful of the three primary weapons available. Try to position your ship to the right of the screen as enemy craft tend to appear on this side.

* Never get the A-powerup. The gun is extremely ineffective and it will force you to throw unnecessary bombs, which aren't effective either. Use B or C capsules instead.

* Enter service mode: hold P1 start and P2 start when you power the machine on. One of the buttons goes to next steps there. You can even steal a credit when you touch the coin acceptor; this will show up after you exit service mode and go to game. Note: the entrance to service mode works only you power the machine on; the game doesn't have a separate dip switch reserved for service mode.

* Fire a bomb when you have 5 of them because you can't hold more. Collection of any powerup when you already have 5 bombs will increase your score by 2000 points.

* Steal a continue: even if dip switch 'Allow continue' is set to off, you can still continue when you have spare credits: simply press start after you lose the last life before you encounter 'Game over' - you have roughly 3 seconds to do so.
* Player 2 can play independently on player 1 when 2p start button is pressed (just like in Konami's Contra or Super Contra) - press the 1p start just after the game begins. The game doesn't have double player mode programmed correctly, so use this tip.

* Get the best ending: destroy all bosses. Letting any boss escape after any round will retain the ending credits, but not the message.