In Game Map: during gameplay, when on foot, hold crouch for 15 seconds. 
Shield: during gameplay, when on foot, hold camera change(C key on keyboard) 
for 5 seconds.
Fly the X-wing: in the Skyhook battle level, when you're flying the Outrider
(not manning the turrets), hold camera change(C key on keyboard) for 5 seconds.
Fly the Tie Fighter: (must have X-wing code on) while flying X-wing, hold 
camera change(C key on keyboard) for 5 seconds.

Fly Outrider again: (must have Tie Fighter code on) while flying Tie Fighter, 
hold camera change(C key on keyboard) for 5 seconds. 

Use the name 'R Testers ROCK' to play any level. 

Use the name ' Credits' to watch the end sequence. Select Hoth to play. I'm not
sure about whether a space is required as the first character.