When you're asked to enter your identity type in NEMROSIM then begin the game. Then select level 1 for both arcade and puzzle difficulty. (In the normal game you are not allowed to do this) As the game begins, hit start to pause the game and go to the Load Game section. From there, you can choose any level you want.

RIG DOCK
MEET GIA
SKEET SHOT
BIG KISS
ZAPPED
GOING UP
BIG SHOCK
EASY RIDE
CATWALK
OPEN OCEAN
STEAL PLANE
ROUGH RIDE
ISLAND RUN
VALLEY RUN
PORT FLYBY
UNDERGROUND
PIT STOP
ICE SCREAM
COLD FEET
DOOR MAN
LOCKED OUT
SLICEOMATIC
NOT FRIENDS
LISTEN IN
GENIUS
RED LIGHT
DRUG STORE
UNSAFE DOOR
GRAFFITI