AT-ST Bonus Level
To access the secret Chicken Walker (AT-ST) bonus level enter the password CHICKEN.
Enter the word TOUGHGUY at the password screen to get all power-ups.
Battle of Hoth
Finish all levels with a GOLD medal and you will be able to play the third (and best) bonus mission: The original Battle of Hoth. Your craft of choice is the Snowspeeder.
Here's your chance to fly a T-16 Skyhopper on Luke's homeworld, Tatooine. As soon as you finish all missions with at least a BRONZE medal, you can take on your buddies in a peaceful race through Beggar's Canyon.
Enter the word CREDITS at the Password Menu and you will be able to watch the Star Wars style Factor 5/LucasArts credits, accompanied by a Rogue music medley.
Death Star Trench Run
As a little hidden bonus, the developers of Rogue Squadron included the Death Star trench run from A New Hope as an extra mission in the game. How do you get it? Beat the game getting SILVER Medals on each level.
Fly the Millennium Falcon
Enter the following password at the password screen: FARMBOY. You can now select the Millennium Falcon in certain missions.
So the game is too easy for you, huh? Why don't you enter the word ACE at the password screen and see what happens?
Infinite Lives Code
With Rogue Squadron's insane learning curve, the following code certainly helps a lot. Enter the word IGIVEUP at the password screen for infinite lives.
Music Menu and Ship Gallery
Since Rogue Squadron includes tons of cool Star Wars tunes, the designers of the game didn't forget to put in a hidden "music test" to let you listen to all of them. In Rogue, you will also be treated to spinning models of the ships while you listen to the music. Simply enter MAESTRO at the password screen (use it in conjunction with the DIRECTOR code) and you will get a new option.
Ever notice how the radar in Rogue Squadron doesn't work like a "real" radar? If you go to the Passwords menu and enter the word "RADAR", it switches to a different mode, where the object with higher altitudes are displayed brighter than low-flying ships.
Watch All Cut-scenes
If you want to see all the cut-scenes in their order of appearance (minus the bonus mission ones), type in the word DIRECTOR at the password screen.