Air Defense Trenches

Air Defensive Trenches is the second level in Quake 4.

The protagonist main objective is to catch up with the rest of his squad at the Air Defense Cannon. After the player kills some Stroggs and catches up with his squad. They are pinned down by enemy Flyers. Sergeant Bidwell gives Kane and Sergeant Morris a mission to destroy the interior hangars inside, so the invasion and allowing the ground forces to be deploying without being such a problem.

Walkthrough
This walkthrough is based on "Lieutenant" difficulty, extra caution is required for "General" difficulty players.

Regroup with Rhino and Viper Squads
After the airlock opens, you will on your own in the facility, there is one Grunt waiting for you near the control room exit, after that, you are pretty safe until you step outdoors. Massive fighting still occurs around you. After you see a SMC Walker being destroyed, follow a fellow marine to meet the rest of the Rhino squad. The route is pretty straight forward that you don't need to worry about getting lost, the only thing you need to worry is the enemies, Guards, Grants and Berserkers will appear in the trenches and try to stop you. Because you will not have enough Machine Gun ammunition for all of them, you will need Blaster to fend off Guards, with the help of your teammate, this level should not be too hard. Berserkers will attempt to surprise you by appearing around the corner, so you should have you Machine Gun ready, your teammates can handle themselves at the early stage of the game, unless the objective requires you to escort them. If you need supply, there are serveral path from the main one, some will have crates with ammo, health and armor in them. Fight your way to the Airlock and the level will end.

Weapons

 * Machine Gun

Items

 * Small Medkit
 * Large Medkit
 * Clips
 * Armor Shards
 * Small Armor Vest

Characters

 * Sergeant Watson
 * Sergeant Dischler
 * Private First Class Damato
 * Private First Class Fassett
 * Corporal William "Billy" Rhodes
 * Master Sergeant Marian Bidwell
 * Lance Corporal Nikolai "Sledge" Slidjonovitch
 * Sergeant Dell Morris
 * First Lieutenant Scott Voss (Voice)

Enemies

 * Guard
 * Light Guard
 * Machine Gun Guard
 * Shotgun Guard
 * Grunt
 * Berserker
 * Flyers (Non-combat)

Trivia

 * This is the last level in Quake 4 demo.