Quake IV Hints

Press Back during game play, then press Down, Up, Down(2), Up, Right, Left, Right, Y, X(2), A.
Single player ranks and awards: Complete the indicated tasks to unlock the corresponding rank or award in single player mode.
Private (Act 1 ): Complete Act 1 with the rank of Private.
Private (Act 2 ): Complete Acts 1 and 2 with the rank of Private.
Private (Defeated the Strogg ): Complete the game with the rank of Private.
Corporal (Act 1 ): Complete Act 1 with the rank of Corporal.
Corporal (Act 2 ): Complete Acts 1 and 2 with the rank of Corporal.
Corporal (Defeated The Strogg ): Complete the game with the rank of Corporal.
Lieutenant (Act 1 ): Complete Act 1 with the rank of Lieutenant.
Lieutenant (Act 2 ): Complete Acts 1 and 2 with the rank of Lieutenant.
Lieutenant (Defeated The Strogg ): Complete Acts 1 and 2 with the rank of Lieutenant.
General (Act 1 ): Complete Act 1 with the rank of General.
General (Act 2 ): Complete Acts 1 and 2 with the rank of General.
General (Defeated The Strogg ): Complete the game with the rank of General.
Untouchable: Complete a level without taking damage.
Blaster Master: Complete a level using only the blaster.
Hyperactive: Complete a level using only the hyperblaster.
Blazing Buckshot: Complete a level using only the shotgun.
The Machine: Complete a level using only the machine gun.
Tooth and Nail: Complete a level using only the nailgun.
Pineapple King: Complete a level using only the grenade launcher.
Ballistics Expert: Complete a level using only the rocket launcher.
Enlightening: Complete a level using only the lightning gun.
The Dark Lord: Complete a level using only the DMG.
The Sniper: Complete a level using only the railgun.
Full Arsenal: Complete a level where a shot with every weapon hits.
Solar Star of Courage: Fight alongside Viper Squad (Hangar2).
Sky Marshall's Medal of Valor: Rescuing Pvt. Lanier of Eagle Squad (Waste).
Galactic Order of Heroism: Fight alongside Raven Squad.
Multi-player ranks and awards:
Complete the indicated tasks to unlock the corresponding rank or award in multi-player mode.
Private (Multiplayer): Get over 100 win points in ranked matches.
Corporal (Multiplayer): Get over 500 win points in ranked matches.

Lieutenant (Multiplayer): Get over 1000 win points in ranked matches.
General (Multiplayer): Get over 5,000 win points in ranked matches.
Basic Training: Play over 100 ranked matches.
First Tour of Duty: Play over 500 ranked matches.
Combat Veteran: Play over 1000 ranked matches.
Seasoned Warrior: Play over 10000 ranked matches.
Number One: Get number 1 on the Leaderboards.
Top Ten: Get a top 10 rank on the Leaderboards.
Perfect Win: Win a ranked match without being fragged.
Bronze Flag: Get over 100 flag captures in ranked matches.
Silver Flag : Get over 500 flag captures in ranked matches.
Gold Flag : Get over 1,000 flag captures in ranked matches.
Viper Squad : Get over 100 frags in ranked matches.
Warthog Squad : Get over 500 frags in ranked matches.
Raven Squad : Get over 5000 frags in ranked matches.
Rhino Squad : Get over 10,000 frags in ranked matches.
The Golden Gauntlet : Get over 250 gauntlet frags.
The Best Impression : Get over 250 Impressive medals in ranked matches.
Your Excellency : Get over 500 Excellents in ranked matches.
Guts but no Glory : Get over 100 Assists in ranked matches.
The Defender : Get over 250 Defense awards in ranked matches.