If they were trying to make a game that felt like it was DOS based, they succeeded.
Now the second thing I mentioned. Not since I was playing games in Windows 3.0, on DOS, have I been outright forced to read through the manual to find some information so that I could actually play the game. (Yes, I'm referring to Stunts, and who actually paid for that?) Either this is an anti-pirate tool, and a bad one at that. Or just a way to make people flip through the manual. Which I for one never do because quite honestly, and literally, they stink. In a offends my sense of smell sense of the term. Hopefully that's clarification enough. If they honestly think that's going to stop people from downloading the game they really should get on the internet a little more often.
Then we get into a few of the smaller annoyances of the game. Such as how every time, and I mean every time you start a mission your main character goes spews forth a bunch of random gibberish that is supposed to be helpful, or something. But in reality is just an annoyance made more annoying by the games 'talking' sound effect. Now I will give the game some props, kudos or what-have-you for having some nice puzzles. And by nice I mean annoyingly simple, and therefore almost impossible. Which makes everything but the 'forced to read the manual' thing forgivable.