Cheat mode:
     Successfully  complete  the game and get all the FlashRAMs. Go to
the  police  station. Go to the Hackers screen and "Unlock Cheat Suit"
will  appear.  Go  to  that  and  do  the  phases. After all three are
completed,  go  to  the  tailors. The Cheat Suit will be available for
$100,000. You can buy and upgrade the suit to get better cheats.

Armor:
     When  you  have  enough  money to buy armor, spend it on them. It
will be as if you have double health.