Hello! My name is Adam, I'm a Unity developer with 3 years experience, and I can certainly make you a custom made project demonstrating basic AI functionality in around 5 hours.
I can get this finished for you and returned today, using open source stock art assets and sounds and basic UI.
I'll use your example and create a basic first person camera for player with a pistol or some other similar weapon that I can find easily animated, and will have pathing done by Unity's NavMesh system, which will be controlled by basic AI script telling it what the priority is.
Please let me know if you have any questions,
Adam