Shadow of Rome - Getting Gold Fortune Coins

Survival Mode:
Get a Silver rank on all the normal events.

Labyrinth Arena:
Get a Silver rank on all the hard events.

Ugly Duck Fling Mini Game:
Get a Bronze rank on all the hard events.

Art Gallery:
Get a Bronze rank on all the normal events.

Armor Upgrade 1:
Earn 300,000 Salvo points by playing through many battles. The points are cumulative. You will be given a strong helmet and arm bracer at the start of every battle from now on.

Armor Upgrade 2:
You will obtain yet another armor upgrade after gaining 800,000 Salvo points.

Unlock special costumes and haircuts for Octavianus:
When you buy a certain amount of items from the vendors in the city gates area, you are given special items delivered to your house as Octavianus. You can access all of these by selecting them from your dresser.

Chameleon suit - Buy all items from all vendors
Crew Cut - Given from start
Mr. Onion Head - Buy at least 5 items
Pansa's Robe - Buy at least 10 items
Splitting Head Ache - Buy at least 20 items

Vitality Opponent Gauge:
Get bronze in all Extreme gladitorial events. It's visible if 'ON' is selected.

Weapons Cache:
In the Syracuse prison 2nd floor, there are two wooden crates that contains a two-handed weapon, as well as a one handed weapon. These are only there when you play as Agrippa when you are exiting the prison. The boxes are in a hole on the rock side of the pathway.