Save the game before starting level 1.Note: This procedure requires editing agame file; creating a backup copy of the file before proceeding.Using a text editor, edit the "gunner3.ini" file in the root directory on the drive where the game was installed. Change the following lines from:
[Save Slot 1] Gun2=0 Gun3=0 <etc...> Gun21=0 Gun22=0 Level=1 Number Of Weapons=1
[Save Slot 1] Gun2=1 Gun3=1 <etc...> Gun21=1 Gun22=1 Level=8 Number Of Weapons=22
When you resume the game from that saved game, 8 levels and all 22 weapons will be unlocked.