Desert Eagle

Controls:

WASD to move,
Space to jump,
Mouse Left Click to shoot.
Escape for volume/quit options.

Credits:

Wes - Environment art
Nadia Dolha - Composing Music
Adrian - Unity indie dev (mostly programming)

A couple of free assets were used too:

Flame vfx from unity asset store,
Revolver model from a humble bundle (owned)
Unity starter assets for the basic first person controller.