Cybermercs

If you press Alt+F12 you can see the prompt "KEY"
Then type "wlrnwhdakf"or"doomsday" and then you can see the words "Cheatcode Enable".
Press ALT+F12 and then press Enter key to type one ofthe cheat codes below.
* Every time before typing the cheat code you have to press ALT + F12.

1). onekill on/off : You can shoot the enemies down with one shot.

2). money "certain amount". You can make certain amount of money from1to999 after you type "money" and the amount you want to have. (example :money 300)

3). timer on/off : If the mission has a time limit you can turn the timer off sothatyou can complete the missions without time limit.

4). invulnerable on/off: After typing "invulnerable on" you can upgradethemodes to God mode so that the character does not die.

5). int 1~999: Change the character’s intelligence quotient after you type"int"and any number from1 to 999 that you want the character to have. (example: int 144)

6). dex 1~999: Change the speed of the move of the character after you type "dex" and any number from 1 to 999 that you want the character tohave.(example: dex 999)

7). hit 1~999: Change the character’s physical strength after you type "hit"andany number from 1 to 999 you want the character to have. (example:hit555)

8). str 1~999: Change the character’s muscular strength after you type "str"andany number from 1 to 999 you want the character to have . (example :str888)
(Information from Cheat Machine)