Weapon Power-Ups Weapons can be upgraded in some stages if you find a power-up. You cannot take the upgrade from one stage to another but it will benefit your weapons within that stage.
Mission 1
Parachute onto the western cliff and look for the upgrade adjacent to the boxes, near the searchlight
Mission 2
Look for this upgrade on the counter of a small building at the entrance of the courtyard
Mission 6
Parachute into the western tower (the one emitting green gas) and look for the upgrade on the top floor
Mission 10
Inside the tunnel after the first 88, the upgrade can be found behind a box at the end of the first corridor
