Here are some cheats and tips for the game Metal Gear.
SZUYPZVG Don’t take hits from bullets
SXVTXZVG No hits taken in hand-to-hand fights with most enemies
ZASILYPA Mystery location 1
GASILYPA Mystery location 2
XZVSAYVZ + PAVSPNTT + AEKSZYIE Start with an energy boost
XZVSAYVZ + PAVSPNTT + GEKSZYIE Start with a super energy boost