Hitman: Blood Money is by far the best hitman in the series. Everything is better.
First of all, the game is $39.99, a great price for what you are getting. Granted, the game is short, but the detail of the levels that you go into are AMAZING. I beat the game in a day for those of you who are wondering. It took me about 14 hours to complete.
The movement and controls are WAY better than the previous games. The controls don't feel sluggish at all. They feel smooth and it's easier to sneak up on people now, granted if you do it right and depending on the difficulty settings. Graphics are definately better.
The best part is that you can upgrade your weapons with different things like scopes, silencers, different bullets, etc. I love this feature and the weapons just look so freakin' cool after their all decked out.
The best part is how you are rated on the missions. There's so many different ways to kill people, its fun to try and find them all. Should it be from an acciden't, a push off a cliff, a barrel falling on someone, etc. etc. etc.
There's so much to write about but I won't bore you. The bottom line is that this is the best Hitman in the series and if you love the first three games, you will LOVE this one. The best part for me in the game was the story. I had to finish the game to find out the story because it was so INTRIGUING. Not to mention that the ending was probably one of the most interesting and coolest endings I've ever seen in a game.
I can't wait for the next one!