The 20 missions are linked together: the life is excellent. Personally, being extremely careful, I spent at least 35h to 40h on the solo to finish with a level of infiltration that suited me, that is something close to "perfection" but it is very difficult, So at times, the urge to take her silent and dislocate some heads is felt! That's the whole point of the gameplay: I set for myself the goal NEVER use my weapon only piano wire and never let me see anyone ... This is why my play time was probably longer than the average. So difficult to set a lifetime, this is highly dependent on how you play: use piano wire and not leave a trace? Use your weapons with silent and never get noticed? Etc etc. The possibilities are vast.
The gameplay is magnificently precise and worked: the perfectly adjusted camera (it is a detail, but I just also play Sleeping Dogs Square Enix and extremely badly adjusted camera, especially when you drive back / start, me given urge to throw the game out the window many times ...), the cover system well done and intuitive, accessible inventory (I rather regret the 3D circular inventory of previous Hitman, but hey you can not have everything!), etc. Technical and you really feel the meticulous work of developers, and it's nice! They were at the height of my immense waiting for this jewel of the video game era.
Otherwise add that, if the variety of the gameplay is fun: you can choose your way to kill and that's really excellent. You feel relatively free and some missions are full of details: watching gameplay videos on Youtube commented for some missions, I rediscovered the game every time because few people had made like me. That's the whole point: the replayability of the single player ...
Graphically: it is extremely worked, it's beautiful. BUT: big downside for color filters that can really hurt the eyes: The example in the mission Vixen Club where the color filters are not too natural struck my eyes ... M'enfin filters also give the stamp the graphics of course, but ... what ... in moderation
As for the Contracts mode, I pass because I've tested a few minutes, I had just finished the solo and did not feel immediately start the missions, let alone create. But this method has potentially interest, nevertheless weaker than the single player mode which is at the height of the stealth game.
This, I say no more if I spend the night! Congratulations to Square Enix Hitman which is just a little gem, do not abandon the series and we are doing (take your time it is at least as good !!) a new album!
PS: Small detail about the costumes Hitman: I regret that he did not usually covered his black suit with red tie, there are missions where you do them and opts for a suit and frankly not top j 'was disappointed, I wanted him to put a little more often to suit her beautiful red tie giving it incomensurable this class! ;)