Nun With a Gun (No Ratings Yet)Loading... Shooting AdviseGame 20 May , 2020 0 PLAY NOW! GAME INFO December 21, 2012. Doomsday! You are our last hope, a nun with a gun. Shoot down all creeps in this side-scrolling apocalyptic shooter.Use the arrow keys or W,A,S and D to run and jump. Use the mouse to aim and fire.