Take a look at the completed game project for the book 'Pro Unity Game Development with C#'. The project is named 'Crazy Mad Office Dude' and is a first-person shooter featuring: first-person controls, head-bobbing, intelligent enemies, path-finding, weapon functionality, weapon-switching, power-ups, health-restored, ammo-restore, GUIs, billboards, 2D Sprites, persistent data, and much more...
Apress Book Link:
http://www.apress.com/9781430267461