This game is a great acheivement by Eidos and IO Interactive. They have managed to create a work of genius that goes way beyond and Hitman game that preceded it or indeed, any game in this genre. They have managed to incorporate the right amount of violence, stealth and finesse that a Hitman game should have.
Firstly, The graphics. Not the best on 360 by any means but still frankly excellent, especially the lighting effects which are superb. The blood effects are also stunning, gory and yet not over the top. There are occasional glitches such as Agent 47 walking through a leaf but overall there aren't many graphical faults.
Secondly, The Gameplay. This is awesome. You can play the game extremely stealthy or blast your way through the missions; it's up to you. But be warned, your notoriety will sky-rocket and this will make it much harder to get though future missions un-noticed. Another great asset of this game is the way in which you can complete your assassinations in many different ways; there is always more than one way to kill your targets. The guards and police in the game also have unbelieveable AI (Artificial Intelligence) as this time they will notice patches of blood, bloodied weapons, they will investigate noises and become suspicious of you if you run or enter restricted areas.
Next, The Story. Absorbing and in-depth with a few suprising plot twists as well as the devatating end. Also, there is a traitor in The Agency (the company that employs you) and any missions you undertake could be a setup. There is also an assassin after you so you must watch your back in all the missions.
Next, The Sound. The music is incredible as it adds mood and feeling to a game that is so cold and callous. The sound effects of the different weapons, of bodies, of blood and stabbings is awesome.
And lastly, The Lifespan. This was the problem with Hitman Contracts; it was too short and, to a certain extent this problem still exists. It is just maybe 2 or 3 missions too short. However, there is excellent replay value for a few different reasons.
1. There are many different ways to complete the missions so you can go back and discover different paths and means to kill your target. 2. You can go back to try and acheive a better rating on each mission. (The best is Silent Assassin, the worst is Mass Murderer.) 3. You can go back and complete the whole game again on a new level of difficulty.
So as you can see, the replay value (Especially reasons 1&2) make up for the slightly short game.
Overall, this is probably my favourite game on my 360 so far and you would have to be mad not to buy it.