Alright, played the entire thing and beat the game in less than 3 hours, and i have say... what a frustrating game, it have a good potential to be better of what it is, the initial set up and plot are good, and everything turns into just go fight someone and have sex over and over until you beat the game. The money you won from fights is absolutely useless if you just do what the game says for you to do.
The graphics are weird and CG'S don't make me believe that was made for human beings, it's so... realistic lifeless. The fight mechanic is strange at firts, but with less than 30 minutes you should understand how it works, quick tip that many people here already commented, but it's always good reinforce:
1: Spam Throw and try to low the motivation status for quick wins in every single fight.
2: I would put more tips, but i already give the best one to beat this game.