Paratroopers In Your Pocket - D-Day Says

D-Day minus 1: On the night before June 6, 1944, more than ten thousand Allied paratroopers were dropped into enemy territory to prepare for the Normandy landings. As soldiers like to say, when Hitler built his famous Atlantic Wall, he forgot to put a roof on it…
Between dense clouds, planes carrying troops were riddled by German anti-aircraft fire. This caused airborne troops to spread out across the area, far from their intended destination.
You are one of these paratroopers. With your luck, the winds have blown you right where you're needed most: you discover a hidden German bunker containing two Schiffskanone L/50 cannons pointed directly at the beaches. Only you can stop them from killing allied troops!
Your comrades must have landed nearby. If you could join forces! For now, all you have is your Colt pistol and your wits. You look at your watch: it's 07:00, the landings are starting. Will you have time to sabotage the German battery before it wipes out the men on the beaches? All you need is some explosives...