Star Wars: Battlefront II/Recovering the Plans

Capture the Barracks CP
You get to play a scene right out of the movies! Cool eh? Anyway, as soon as you spawn, the door in front of you will blow. Rebels will immediately start throwing grenades into your little boarding pod, so get moving! Eliminate resistance in the short hallway in front, then turn the corner to find a small army of Rebels. You're obviously not going to be able to take on all of them... fortunately, the Barracks CP is located off to the right side of this hall. Ignoring most enemies, just dart into the door on the right, and you'll see the command post.

There's also a medical droid to your right, and it will help you survive this. Go stand next to it, and start mowing down the enemies that come in to kill you. When they're dead, move into the center of the room and start capturing; if another wave of Rebels enter the room (which can happen more than once), retreat to the health droid again. Repeat this procedure until you capture the post.

Head to the Tech Room
Darth Vader will have been unlocked by now. Spawning as him will make the rest of this mission a lot easier (not to mention the coolness factor), so go ahead and do that. The Tech Room is located straight down the hall that was swarming with enemies earlier—enter through either of the two doors.

Destroy the Security Mainframes
There are eight of these Security Mainframes to destroy. Four are in the room you are in, and the other four are located further up the bridge. As you slash at these, remember to take some time to kill enemy troops as well; it's the only way to keep your health bar up. There's plenty of fodder in this area, so you might consider using the saber throw ability to knock out large numbers of troops at once.