Vinnie is not alone. His girlfriend Shorty will protect his rear as she snipes his enemies! Quickly inspect the situations and sift anybody that gets in Vinnie's way.
Use the mouse to aim and shoot, W and S keys to zoom your scope and spacebar to reload.
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.