1. Everyone focuses on getting control of RL area
The entire team should focus all of their attention on gaining control of the RL area in the first few minutes of the game. Why? If you control the RL area in the beginning of the game, your entire team will have RLs, and will likely have the YA too. The opposing team, on the other hand, will have no rocket launchers, or one if they were able to escape the RL area. This is obviously a sizeable advantage to have. There may not be any other time in the game where your entire team has good weapons and armor, and the opposing team has none.
 
2. Once RL area is taken, get control of Quad
The quad is a devastating artifact. An enemy with 200 armor and a SNG with quad can mow down anyone in a matter of seconds. Therefore, maintaining control of the quad is also of the utmost importance, and is definitely a high priority, and may well be the highest once the RL area is secured.
 
3. Use quad to protect RL guys until they are armored up and in good health.
With a quaded guy who has a RL sitting on the bridge, the enemy will surely stay far away from the RL area until he, or the quad, is gone. Thus, you should use the quad to protect the RL guys until they are beefed up enough to fend for themselves.
 
4. **Up till this point, everything is the same as what you would do using the "2 at RL, 1 at Quad, 1 at RA" strategy.**
Two quad guys sit at Quad platform and wait.
With guys sitting at the Quad, it makes it virtually impossible for the other team to make the quad jump over from the eyes to the quad. This leaves the other team with only two ways of getting into the RL area: to go from the bottom entrance, or to respawn there.
 
5. RL guys are on the lookout for attackers coming from lower bridge.
As explained in #11, the RL guys will encounter a lot more resistance coming from the lower bridge. One RL guy should be waiting on the bridge above the lower entrance, to snipe at the enemies before they step foot into the area. See "Explanation" for more details.
 
6. Control!
By now, the entire side of the level should be under your control. Now the team waits for the enemy to come to them. If at any time the enemy escapes with an RL, one of the Quad guys can jump over and clean out the areas. However, you will usually want the Quad guy to stay on that side of the level, to ensure that no RLs are given up to the enemy.

Next: Important Notes: Quad Guys