Sabotage at the Submarine Base

During the German occupation of La Rochelle. The German forces constructed an underwater base in La Pallice, north of La Rochelle, where they were developing submarines with new weapons. 1943 You are members of the resistance, part of the "Alliance" movement, loyal to the deposed mayor of La Rochelle, Léonce Vieljeux. The Alliance intercepted a German telegram and decoded its message. Admiral Doenitz is visiting La Rochelle, troops will be reviewed for one hour. This means that the guard will be lowered during this period. It's an ideal opportunity to infiltrate the base and sabotage the submarine. Your mission: Sabotage the submarine and escape the base in 60 minutes or else you will be captured and the entire resistance will undoubtedly be annihilated.