172 Hours in I learnt that you finish both the Cultural and Military Victory at the same time.
Some info first: I've been playing my Athenian campaign for a good 172 hours or so now building everything up the way I want it and getting it all to work properly up to the point it is at now where I'm running extortionate taxes and the lowest public order each turn in my empire is at 20.
With this all fixed and done I thought I'd give the Military victory a go and went ahead into Spain slaying those pesky Gallaeci as I went along.
To my big surprise in 28BC i suddenly got the end game video showing Greeks murdering some Romans/Etruscans telling me I just won the game. I was curious about it so I looked at the message panel and found out that I'd won two of the possible victories in the game at the same time.
[The images can be found here.](http://imgur.com/a/Trk1q)
And all those 172 hours of Rome 2 gave me three small achievements for my steam profile. Woo.
EDIT: I just noticed the title is missing a very important "Can" My mistake there.