Camouflet

During the great war, you, a recaptured miner, are placed in a fighting tunnel under the front lines. All alone with just a shovel, you must recover lost weaponry, reopen passages and place found explosives at your objectives. You must consider how you dig your tunnels. Long straight tunnels are death traps with nowhere to hide. Remembering to construct alcoves or escape tunnels can buy you just enough time to get away or draw your pistol. While you dig to them. They dig to you...