Various Cheats and Hints
All Weapons
While playing hold Select and press L1 Square Triangle Square Square Circle Square Circle Triangle
Full Ammo
While playing hold Select and press L1 X Square Triangle Triangle X Circle Triangle X
Full Health
While playing hold Select and press L1 Triangle X X Circle X Triangle Square Square
Invulnerability
While playing hold Select and press L1 Circle Circle Square Circle Triangle X X Circle
Passwords
Level Passwords
Chemical Factory SOXOTTXXOSXS
Rooftops XTSOSXTOTTTT
Jupiter Station TXTSOOXOXTSS
Triton XOTOSTXXSOOT
Mars OXOTXXSOOXTX
Antarctica SOXTTOSTXTST
IO OSOXTTXOXTXX
Reactor SXOOTXXSOTOO
Orbiting Habitat SOXXSXTOSOTS
Dream TTXXOOTTTSSO
Prison OSTOXOSTXXOS
Fortress TTXSTTOXOSXO