This will be the first three way fight here on Media Versus! Yay.
Here we have Brad Pitt's Achilles from the movie Troy. http://moviesmedia.ign.com/movies/image/article/512/512987/brad-pitt-200405100555317.jpg
Russel Crow's Maximus from the movie Gladiator. http://en.wikipedia.org/wiki/Maximus_Decimus_Meridius
And Sam Worthington's Perseus from Clash of the Titans. http://wallpaperswide.com/download/sam_worthington_as_perseus_clash_of_the_titans-1280x720.jpg
The three combatants enter the Colosseum from three different points. This is just a bare arena. Just sand. Achilles gets two javelins, a spear, a sword, and his shield.
Maximus gets a shield, sword, and dagger. And Perseus gets his Magic Sword from the movie and his shield from the movie.
I think that I've covered everything. Tell me who would win and why. I'll check back in about a week.
Edit: Crap! I didn't cover everything. One last thing, to make this fight more fair, Achilles is not invulnerable for this fight. He just has his skills from the movie. I don't think Perseus is supposed to be invulnerable too. If he is though, he isn't for this fight either.