Defend the transports and frigate.

Shoot down all TIE fighters and have your wingmen help out.

Go right down into the middle Debris object in the lower part of your screen to get the Advanced proton torpedoes. If you miss it then, when they say "more TIE fighters" and it resets your screen, do an immediate U-turn. You should be pointed right into the hole of some debris to get the special bonus. This gives you advanced proton torpedoes (X-wing and B-wing)

When Wedge says to grab an A-wing, fly into the blue glowing symbol to switch planes. This is mostly practice in switching planes that you'll use a lot later on. Just keep fighting TIEs until you end the level.

Gold Medal:
4:11
40 enemies
19% accuracy 2 friends lost
0 lives lost
72% computer

Star Wars Rogue Leader: Rogue Squadron 2 Walkthrough