Enter the following as Passwords:

 
A_MOON_GETAWAY		Low gravity 
FIRE_NO_LIMITS		Rapid firing	 
GANGS_UNLOCKED		All vehicles 
GIMME_DA_ALIEN		Y the Alien 
GO_REALLY_SLOW		Slow motion 
I_AM_TOUGH_GUY		Expert mode 
JTBT7CFD1LRMGW		All levels and characters 
LEVEL_SHORTCUT		Level select 
LIVING_FOREVER		Invincible 
LONG_SLIDESHOW		View ending sequences	 
MAX_RESOLUTION		Ultra-high resolution mode 
MISSILE_ATTACK		Power-up missile	 
MIX_MATCH_CARS		Same vehicles in multiplayer 
POPULATION_OUT		No enemies	 
 
JTBT7CFD1LRMGW		Unlock everything!

Bonus level:



Successfully complete all of ‘Y’ the Alien’s missions…