Star Wars Rogue Squadron II: Rogue Leader/Power-ups

Advanced Cluster Missiles

Found in: Prisoners of the Maw

In between the weapons storage and communications tower, theres a dome. Bomb it for the upgrade.

Advanced Concussion Missiles

Found in: Imperial Academy Heist

In your Y-Wing, fly through one of the hangers at the academy.

Advanced Lasers

Found in: Battle of Hoth

After the AT-ATs blow up the shield generator, fly back to it to find the upgrade in the rubble. These are VERY helpful.

Advanced Proton Bombs

Found in: Razor Rendezvous

Go as fast as possible to the other side of the Star Destroyer to see a Llamda shuttle. Kill it for the upgrade. It will run away if you wait too long.

Advanced Proton Torpedoes

Found in: Ison Corridor Ambush

At the beginning of the level, dive down under the Frigate to fly through a large piece of debris. The powerup is inside of it.

Advanced Shields

Found in: Death Star Attack

At the start of the 2nd stage, dive close to the ground. Turn about 15 degrees to the left. It's sitting on a small building next to a turret.

Advanced Targeting Computer

Found in: Strike at the Core

At the final straightway before the core, fly under some pipes on the right side.

Cluster Proton Bombs

Found in: Imperial Academy Heist

Take a speeder during the night and fly through the hanger on the opposite side of the academy from the Concussion Missile Upgrade.

Homing Cluster Missiles

Found in: Battle of Endor

Take out the left Star Destroyer, and wait until it falls all the way. While it's hanging there in space, fly down to it. The upgrade will be in the hanger. (Kudos to whoever figured out this easier way to get it)

Homing Concussion Missiles

Found in: Raid on Bespin

Take out the balloon at the beginning, and head to the second platform. Blow up the tanker, and in the rubble of the tanks will be the upgrade.

Homing Proton Torpedoes

Found in: Vengeance on Kothlis

Once you get to the Destroyer, fly through a hole on the left side of the bridge.