You need a HEX-editor for this. Start the game as Chris. Grab the gun from Jill. Save the game. Quit the game. Load the save-game with your HEX-editor. Look for this location:00000320. Look for the code 02 0ff.
Enter instead of this,
01 ff - combat knife
02 ff - beretta 127 ammo
03 ff - shotgun 127 ammo
04 ff - dum dum colt 127 ammo
05 ff - colt pythom 127 ammo
06 ff - flamethrower
07 ff - bazooka 127 ammo acid
08 ff - bazooka 127 ammo explosive
09 ff - bazooka 127 ammo flame
0a ff - rocket launcher
6F FF - uzi unlimited bullets
70 FF - mini mi unlimited bullets
0b ff - clip 255 ammo (beretta)
0c ff - shells 255 ammo (shotgun)
0d ff - dumdum ammo
0e ff - magnum ammo
0f ff - flamethrower ammo 225
10 ff - explosive ammo 255 (bazooka)
11 ff - acid ammo 255 (bazooka)
12 ff - flame ammo 255 (bazooka)
27 ff - battery for the elevator
2f ff - inkt ribbon
33 ff - sword key
34 ff - armor key
35 ff - shield key
36 ff - helmet key
37 ff - lab key [1]
38 ff - special key
39 ff - dorm key [002]
41 ff - f-aid spray
48 ff - mixed blue+green
49 ff - mixed herbs all
3a ff - dorm key[003]
3c ff - lab key[2]
3d ff - small key
If you entered one of these codes, save the savegame and start the game. Load your savegame and voila.
