The reviews are right. This game's gameplay system is just totally wrong. You'd think it'd be cool to dress as a police officer and just walk into a police station without anyone raising an eyebrow right? It was like that in the former hitmans and although it was very unrealistic, it was fun. It's painfully obvious that the devs wanted to make a more realistic game. So now when you're disguised, everyone is cool with you except those with the same costume. The stupidity and futility of disguising is the fact that you found costume X implies that people wearing costume X are prolly all around you, so it hardly gives you any fucking advantage.
Also, the achievements are WAY too much integrated into this game. It feels like every freaking action I'm performing is for an achievement. Wtf.
And yeah.. why should you play as a "hitman" when you're in a 4-missions fugutive act? I think the chapter is even called Run Like Hell or whatever.
It looks like IO was sick of the Hitman formula and though Splinter Cell: Conviction was a way better game.