Mission: Escape

Mission: Escape is a first-person shooter game. The main character has one gun. It is a gun that can shoot and capture the terrain. Use your gun well and escape safely. When I opened my eyes, I stand in a strange place. My last memory is of losing consciousness while preparing for a mission. I dont know where we are, but we have a gun, so lets move. Im sure I can go back. You become the main character and must rely on one gun to get out of this place.