Vietcong is a tactical first-person shooter computer game developed by Pterodon and Illusion Softworks, published by Gathering in April 2003, set during the Vietnam War. In addition to the original game, expansion pack Vietcong: First Alpha was released in February 2004 with some new features, and was bundled with Vietcong as Vietcong: Purple Haze for the PC. Vietcong: Purple Haze was also launched in October that year as an expanded version for PlayStation 2 and Xbox developed by Coyote Games.

The player takes on the role, in the single campaign, of Sergeant First Class Steve R. Hawkins, born 13th October 1939, in Wilmington North Carolina. He has been assigned to the Special Forces camp at Nui Pek, situated near where the Ho Chi Minh trail reenters Vietnam from Cambodia, so it is considered one of the most dangerous areas in Vietnam. Steve leads the rest of the Special Forces stationed at Nui Pek, each being under a Sergeant's command and having its own specialties.
(Wikipedia)

CHEATS

Press ~ during game play to display the console window, then type giftfrompterodon to enable cheat mode. Then, enter one of the following codes in the console window to activate the corresponding cheat function. Note: Most of the codes can only be used in single player mode.

Codes

Restore health - chtheal

Restore health for team - chthealteam

Weapon select - chtweap (0-30)

Refill ammunition - chtammo

Get grenades - chtgrenades

Enemies cannot hurt you - chtkostej

Access all quick fight maps - chtallqf

VC and NVA wear Indian masks - chtcannibals

Toggle third person view - cht3pv (0 or 1)

Toggle frame rate display - showfps (0 or 1)

Toggle stat display - showprof (0 or 1)

Weapon numbers
Use one of the following entries with the chtweap code:

1 - M16
2 - Ak47
3 - (none)
4 - M1 Garand Sniper Rifle
5 - (none)
6 - PPs 41 (Drum Clip)
7 - Colt .45 Pistol
8 - Tarakov
9 - Marakov
10 - .38 Revolver
11- Remmington Shotgun
12 - Winchester Rifle
13 - (none)
14 - SVD Dragunov
15 - SKS Simonuv
16 - (none)
17 - M60 Heavy Machine Gun
18 - Degterav Machine Gun
19 - US-M3
20 - (none)
21 - Thompson
22 - Silenced Colt .45
23 - PPs 43
24 - (none)
25 - M1 Carbine
26 - Mosin Nagant
27 - M79 Grenade Launcher
28 - Bakiael Shotgun
29 - US Knife
30 - VC Knife


Here is a game trailer: