Assault Rigs

Level password - Level names
212132 - Level 2: NEXTGEN
322443 - Level 3: THIS WAY
323343 - Level 4: JOY JOY
233313 - Level 5: NODDY
324412 - Level 6: WASTELANDS
122243 - Level 7: VERTIGO
321233 - Level 8: GEM TOWER
323131 - Level 9: BRIDGE
334212 - Level 10: OBLITERATE
331342 - Level 11: ARENA
423334 - Level 12: P B M
324132 - Level 13: RAMPS
331221 - Level 14: OASIS
413333 - Level 15: HALLS
424442 - Level 16: COASTER
333432 - Level 17: MINE
242123 - Level 18: LOOK UP
112134 - Level 19: DEADLINE
121332 - Level 20: FORT
323233 - Level 21: STAIRWAY
223423 - Level 22: PARK A LOT
411113 - Level 23: ZAMCAM
322333 - Level 24: SHOOT ME
343342 - Level 25: WILD
244141 - Level 26: OIL RIG
142332 - Level 27: RIGHT WAY
242222 - Level 28: WASTE TWO
324144 - Level 29: DODGE
241413 - Level 30: AIR
421343 - Level 31: JUMP
321421 - Level 32: ROOM 101
113112 - Level 33: FIREPOWER
142442 - Level 34: WAVE
431313 - Level 35: PUSH OFF
133112 - Level 36: PERIMETER
133132 - Level 37: SPIRAL
232321 - Level 38: THE CASTLE
213113 - Level 39: FORTRESS
313421 - Level 40: LIFTS AHOY
413432 - Level 41: PUSH ME

Cheat Codes:

L - Left
F - Fire
R - Right

Invincibile mode:
While playing a game, press L, F, L, F, L, L, F, R, F, R, F, F.

Unlock all weapons:
While playing a gae, press L, R, L, L, R, L, R, R, Up, Down, Up,
Up, Down, Up, Down, Down.