Hello, I have recently received the first three Hitman games on PC from friends and I will get Blood Money soon on Xbox 360. Basically, do I have enough time to complete them by 20th November?
Well, I'm not sure with the first game . . . I never beat it because it's difficult and god awful.
All the other games though are a modest length, mostly because re-playability is a big focus of the series. It's fun to replay previous missions (e.g. a birthday party hit at a house in the suburbs, an opera house hit, etc.) using different methods.
You should be able to beat all of them if you've got absolutely nothing else planned till the 20th and don't replay missions. It's a shame your last game is going to be Contracts though. I felt that was the weakest Hitman game excluding the original, and many of the missions are just remakes of old Hitman 1 missions. For context, they're supposed to be dream sequences . . . or something, its been a while.
Still, Hitman is a great series. I hope you enjoy it.
The second game is easily the longest. I'd say you'll get a good 10 to 12 hours out of it. The others are a bit shorter, either because they have fewer levels or the levels are easier. Contracts, for instance, can probably be beaten in about 4 to 5 hours if you don't replay missions.
Also, if you can't get into Hitman 1, there's no shame in skipping it and Contracts will sum up important aspects of it for you.
It's very antiquated . . . and I didn't find it to be a particularly good game even when it first came out . . . and this is coming from someone who loved the concept behind Hitman and bought it on release day.
Still, others disagree with me so maybe you'll enjoy it.