Hacking has never been soo much fun!
When I first played the game (when it was released on steam) I had no idea that I would be spending most of the day hacking into company mainframes or altering other people's academic records.
The tutorial mission really helps you get a hang of some of the tools in the game, after 5-10 min you are ready to for business.
I've only "died" 2 times in the game because I was a little sloppy with covering my tracks, but the game keeps pulling me back for more ^_^
The game gets REALLY hard when you take on the more profitable jobs (if you don't have the right tool's that is).
All in all this is a good game that you can put down and pick up again.
You can also find some really cool mods at http://modlink.net/ to enhance your hacking experience ^_^