I'm sorry but I got to disagree with this.
It shouldn't take more then a couple hours to get a real feel for a game. You shouldn't need to (For example clock in 10hours) before the fun starts. I personally hate that mind set.
"Its better 5 hours in guys"
To be clear I'm not saying the game is bad (having played it yet). Going to pick it up soon after I finish a couple other games.