Nest

The world is at war. Your regiment has been ordered to defend a city from enemy invasion. After many weeks of constant bombardment and a long siege most of your comrades and officers are dead or missing. Sheltered in the bell tower and determined to resist until your last breath, with only one rifle and all the bullets you managed to gather. Every day you see enemies approaching and transport planes dropping paratroopers that will soon try to destroy your base and kill you. Enemies come from all directions, they try to reach you from different sides every day, they approach using cover to avoid you seeing them.