This game is also available on PS2.
Enter any of these as the weapon name:
Colt 45 - colt45
Frag Grenade - m2frag_grenade
Walther P38 - p38
Steilhandgranate - steilhandgranate
M1 Garand - m1_garand
Mauser KAR 98K - kar98
Shotgun - shotgun
Bazooka - bazooka
Panzerschreck - panzerschreck
BAR - bar
StG 44 - mp44
Thompson - thompsonsmg
MP40 - mp40
Springfield '03 Sniper - springfield
KAR98 Sniper - kar98sniper
+set ui_console 1 +set cheats 1 +set thereisnomonkey 1
Then press the tild key to bring up the console. Now type dog to be invincible. Type it again to turn off.
+set ui_console 1 +set cheats 1 +set thereisnomonkey 1
Then press the tild key to bring up the console. Now type wuss to get all guns and ammo
+set ui_console 1 +set cheats 1 +set thereisnomonkey 1
Then press the tild key to bring up the console. Now type noclip to walk through walls. Type it again to turn off.
+set ui_console 1 +set cheats 1 +set thereisnomonkey 1
Then type giveweapon weapons/p38.tik in the console
+set ui_console 1 +set cheats 1 +set thereisnomonkey 1
Then type notarget in the console