* Power meters:
1) Type A:
- Missile: Falls to the ground, then slides along it until it hits something.
- Double: Fires a bullet at 45 degrees up as well as forward.
- Laser: Replaces your bullets with a blue beam.
2) Type B:
- Spread Bomb: Large explosion of death.
- Tail Gun: Fires backwards as well as forwards.
- Ripple: Salamander's ripple laser.
3) Type C:
- 2-Way: Bombs fall up and down.
- Vertical: Fires a bullet directly upward as well as forward.
- C. Laser: Toothpaste laser rides again.
4) Type D:
- Photon Torpedo: Similar to standard missile, but goes straight through enemies.
- Free Way: Fires in direction your ship is moving.
- Twin Laser: Twin sets of short beams.

* Edit mode weapons:
1) Missile:
- Normal: Falls to the ground, then slides along it until it hits something.
- Control: Flies vaguely in direction ship is moving.
- Upper: Gravity-defying upward missile.
- S.Spread: Backwards-firing spread bomb.
2) Double:
- Vertical: Fires a bullet directly upward as well as forward.
- Spread Gun: Fires diverging bullets forwards. Select twice for triple shot.
- Tail Gun: Fires backwards as well as forwards.
- Free Way: Fires in direction your ship is moving.
3) Laser:
- Twin Laser: Twin sets of short beams.
- Ripple: Expanding loops of destruction.
- E. Laser: R-Type style charge-up weapon.
- C. Laser: Toothpaste laser once again.
4) Option:
- Option: The multiple we all know and love.
- S. Option: Strangely behaved multiple with a mind of its own.
5) ?:
- Force Field: All-over protection.
- Shield: Nemesis-style twin barriers.
- Free Shield: Barriers which can be stuck anywhere on the ship.
- Reduce: Shrinks the spaceship. Can be selected twice.
6) !:
- Normal: Return to normal bullets.
- Speed Down: Reverses the effects of speed up.
- Option: Another chance to select a multiple.

* Change BGM : In Stage 3 (In The Wind), around the T-shaped cliff, you will find an enemy bay against the wall and under a ceiling, which is nearly impossible to hit except with the use of some types of Missiles and the S.Option. Destroy it and the BGM in the stage will change.

* Play First Level Of "Salamander" Or Gradius : In Stage 10, when you are at the last boss of the game, get hit by the boss' attack that comes out of its mouth. You will then be taken either to Salamander stage 1 or Gradius stage 1.

* Stage Skip :
1. Turn Odd Number Dip Switches except Dip 1-5 AFTER boot up. As follows :
Coin A = 1 Coin/6 Credits
Coin B = 1 Coin/6 Credits
Lives = 3
Cabinet = Upright
Bonus Life = 50000
Difficulty = Hard
Demo Sounds = Off
Flip Screen = On
Upright Controls = Single
Service Mode = On
Unknown = Off

2. In game, hold Service Switch (Coin 3 = Key 7 in Mame) then press 1P Start Button.