Lock the door, Artoo. All right, check that side of the street. It's secure. Move on to the next door. I would much rather have gone with Master Luke than stay here with you. I don't know what all the trouble is about, but I'm sure it must be your fault. You watch your language!
The approach will not be easy
You are required to maneuver straight down this trench and skim the surface to this point. The target area is only two meters wide. It's a small thermal exhaust port, right below the main port. The shaft leads directly to the reactor system. A precise hit will start a chain reaction which should destroy the station. Only a precise hit will set up a chain reaction. The shaft is ray-shielded, so you'll have to use proton torpedoes.