Go to Options/Passcodes and use the next codes: 
 (you will hear a short click if cheat was accepted). 
 
 Code - Result: 
 HRDTOKIL - Advanced Shields 
 
Cheats 
From the Main Menu select Options then choose Passcodes. You can enter the 
following codes for your game. 

View the Development Team
 EOWXZGAS
 
Pink Ships
 ruagirl?
 
Unlock the Dark Side Bonus Level
 FRMRYLDAD
 
Unlock All Levels plus the Infiltrator Bonus
 JHGNRGAS
 
View the Credits
 DIWMZIAR
 
Unlock All Levels without the Bonus Levels
 GPAYQWAJ
 
Unlock All Naboo Craft
 NIZWAGAO
 
Infinite Lives
 LFZWKXAA
 
Double Your Secondary Weapon
 UYCZNCAX
 
Unlock the Art Gallery
 JOBXXFAI
 
Unlock the Concert Hall
 RECTVBAH
 
Unlock the Heat Seeking Missiles
 ABVUSEAY
 
Unlock the AAT
 RQORACAQ
 
Unlock the Sith Infiltrator
 FRBPTDAY
 
Unlock the Swamp Speeder
 XFIIYBAY
 
One Shot Kils
 CXSJMIAA
 
Increased Fire Rate
 MELTDOWN
 
Advanced Missiles
 ACH!