Also titled Lylat Wars.

Control title screen:
Complete the game on any path. Return to the title screen and use the Analog-stick to move the "64" logo.

Remove targeting:
Pause the game and press R.

Use Land Master:
Win a medal on Venom in normal mode to use the Land Master (anti-aircraft rotation tank) in Vs. mode.

Alternate title screen:
Get all 30 medals in the game (15 in normal mode and 15 in expert mode).

Play by Foot:
Win a medal on Venom in expert mode. Falco, Fox, Peppy, or Slippy may be played on foot in Vs. mode.

Hidden art work:
Complete the game in expert mode using either route to Venom. Wait until the credits finish. Depending on which Venom route was taken, two different screens will appear.

Expert mode:
Obtain medals on all fifteen levels by completing each level by exceeding the minimum number of hits and keeping all your wingmen alive. This will also unlock a sound test option.

 Level                 Minimum hits
  Aquas         150 
 Area 6        300 
 Corneria      150 
 Fortuna        50 
 Katina        150 
 Macbeth       150 
 Meteo         200 
 Sector X      150 
 Sector Y      150 
 Sector Z      100 
 Solar         100 
 Titania       150 
 Venom         200 
 Bolse         150 
 Zoness        250 

Sector Z recharge:
In Sector Z, fly in the rear top hatch of Great Fox, over the middle engine. You will emerge near the front lower hatch completely recharged. Also, damaged wings will be repaired.

Moving faster left or right:
You can move faster left or right by performing a barrel roll while turning, except in all-range mode. It does not matter which way the barrel roll is oriented, it will work for both sides. Try using the index on the hand that is less busy. For example, if you are shooting enemies, slowing down and turning right will executing this move. It is best to use the left index, even if you need to turn right. A left barrel roll will be easier and more practical in this situation. Do not use this trick if your camera angle is inside the Arwing; it will only make you hit the ground faster.

Blocking enemy fire while executing a somersault:
Nothing stops you from executing a barrel roll while executing a somersault. This will never be useful in the main game, but also can be extremely useful in versus mode.

Defeating Adross:
Shoot at Adross' eyes until he has to rub them. Then shoot at his hands. If he tries to inhale you, move to the side of the screen. When he spit rocks, keep shooting them. Carry on shooting his eyes and then hands and repeat this until his head explodes. If you are fighting the fake Adross, you will find a robot. Just fire a bomb to destroy it. If you are fighting the real Adross, he will turn into a brain. Chase his eyes and destroy them. After destroying both of them, the brain will chase you. When it gets close enough, somersault. If he grabbed you, keep pressing buttons to escape. If done correctly, you will now be behind him. Shoot the gray matter and repeat until he is defeated. After that, follow your father out or you will die.

Homing missile:
Charge the laser then launch a bomb when shooting at an opponent.