Quake 4 Codes -

Cheat Codes
Press during game play to display the objectives window, then quickly press the following keys to activate the corresponding cheat function:

x2, x2, , , , , , - Get all
, , , , x2, , - Health
, , , , , , - Ammunition
, , x2, , , , , , x2, - Never die

NOTE: If you want to get the Quake 4 achievements, do not use cheat codes. Once a cheat code is active the game will disable all achievements. If you have this problem on your saved game files, you must delete all of your current save files for the game and start again.

Xbox Live gamer points (single player mode)
Complete the following achievements to unlock the indicated number of Xbox Live Gamerscore points:

Private (Act 1) - Complete Act 1 with the rank of Private (15 points).
Private (Act 2) - Complete Acts 1 and 2 with the rank of Private (20 points).
Private (Defeated the Strogg) - Complete the game with the rank of Private (25 points).
Corporal (Act 1) - Complete Act 1 with the rank of Corporal (25 points).
Corporal (Act 2) - Complete Acts 1 and 2 with the rank of Corporal (25 points).
Corporal (Defeated The Strogg) - Complete the game with the rank of Corporal (30 points).
Lieutenant (Act 1) - Complete Act 1 with the rank of Lieutenant (25 points).
Lieutenant (Act 2) - Complete Acts 1 and 2 with the rank of Lieutenant (25 points).
Lieutenant (Defeated The Strogg) - Complete Acts 1 and 2 with the rank of Lieutenant (30 points).
General (Act 1) - Complete Act 1 with the rank of General (25 points).
General (Act 2) - Complete Acts 1 and 2 with the rank of General (25 points).
General (Defeated The Strogg) - Complete the game with the rank of General (30 points).
Untouchable - Complete a level without taking damage (10 points).
Blaster Master - Complete a level using only the blaster (15 points).
Hyperactive - Complete a level using only the hyperblaster (15 points).
Blazing Buckshot - Complete a level using only the shotgun (15 points).
The Machine - Complete a level using only the machine gun (15 points).
Tooth and Nail - Complete a level using only the nailgun (15 points).
Pineapple King - Complete a level using only the grenade launcher (15 points).
Ballistics Expert - Complete a level using only the rocket launcher (15 points).
Enlightening - Complete a level using only the lightning gun (15 points).
The Dark Lord - Complete a level using only the DMG (15 points).
The Sniper - Complete a level using only the railgun (15 points).
Full Arsenal - Complete a level where a shot with every weapon hits (20 points).
Solar Star of Courage - Fight alongside Viper Squad (Hangar2) (20 points).
Sky Marshall's Medal of Valor - Rescuing Pvt. Lanier of Eagle Squad (Waste) (20 points).
Galactic Order of Heroism - Fight alongside Raven Squad (20 points).

Xbox Live gamer points (multi-player mode)
Complete the following achievements to unlock the indicated number of Xbox Live Gamerscore points:

Private (Multiplayer) - Get over 100 win points in ranked matches (5 points).
Corporal (Multiplayer) - Get over 500 win points in ranked matches (10 points).
Lieutenant (Multiplayer) - Get over 1000 win points in ranked matches (25 points).
General (Multiplayer) - Get over 5,000 win points in ranked matches (50 points).
Basic Training - Play over 100 ranked matches (5 points).
First Tour of Duty - Play over 500 ranked matches (10 points).
Combat Veteran - Play over 1000 ranked matches (25 points).
Seasoned Warrior - Play over 10000 ranked matches (50 points).
Number One - Get number 1 on the All Game Types Leaderboards (20 points).
Top Ten - Get a top 10 rank on the Leaderboards.
Perfect Win - Win a ranked match without being fragged (5 points).
Bronze Flag - Get over 100 flag captures in ranked matches (5 points).
Silver Flag - Get over 500 flag captures in ranked matches. (10 points).
Gold Flag - Get over 1,000 flag captures in ranked matches (25 points).
Viper Squad - Get over 100 frags in ranked matches (5 points).
Warthog Squad - Get over 500 frags in ranked matches (10 points).
Raven Squad - Get over 5,000 frags in ranked matches (50 points).
Rhino Squad - Get over 10,000 frags in ranked matches (75 points).
The Golden Gauntlet - Get over 250 gauntlet frags (20 points).
The Best Impression - Get over 250 Impressive medals in ranked matches (10 points).
Your Excellency - Get over 500 Excellents in ranked matches (10 points).
Guts But No Glory - Get over 100 Assists in ranked matches (10 points).
The Defender - Get over 250 Defense awards in ranked matches (10 points).