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.

You will obtain yet another armor upgrade after gaining 800,000 Salvo points.

During the stealth segments, rare coins can be discovered. Octavianus can find one Gold Fortune coin on the final guard in any given location. To obtain it, you must disable every opponent in the given area first. The last man you search (with the Circle button) will yield this rare coin!

Get a Silver rank on all the normal events.
Get a Silver rank on all the hard events.
Get a Bronze rank on all the hard events.
Get a Bronze rank on all the normal events.

collect a total of 300,000 salvos
complete all gladiator challenges

get a gold rank on all normal events
get bronze in all Extreme gladitorial events. They will be invisible when 'ON' is selected
get a silver rank on all normal events
collect a total of 800,000 salvos
get a bronze rank on all hard events
get bronze in all Extreme gladitorial events. It's visible if 'ON' is selected.