I want to stress one fact: Giarabub is not an invention of my mind, is built from real life pictures, so if there is a gate or hole in the map is because it exists in the real fortress (some corners doesn't appear in any pic so I used artistic license but well, the map is fairly acurate)
It has 6 gates, a moderately competent team will defend them pretty well, and only the 3 hook kits can add some excitement to that job. If there is no teamplay that's another matter, it could have only one gate and your lonewolves crew still will fail
Pic attached
The breda 37 is fixed, Kubador