IO's new game is an endeavor based on many little things that work comprehensively. It's more accessible, looks better - significantly so on Xbox 360 and PC, anyway - and is worth your hard earned money if you're a patient and obsessive stealth gamer. What we're left with is a good, familiar game of Hitman.
In other words, IO built a lot of good features around the core play, which was tinkered with and enhanced a little, but it basically left the 47's fundamental game alone. So while fans of the series will notice all the new features in subtle ways, the gameplay is essentially like playing any of the previous games in the series. The newly added features don't, however, alter the fundamental experience much beyond Contracts. The results are solid - the new notoriety system functions smartly, the upgraded currency system encourages players to be pennywise, and the text-sensitive controls and up-close fighting systems make this often very un-accessible stealth game more forgiving.