SvitlaSveta4: I remember that in Steam version some achievements was broken, if I remeber correctly -something with game difficulty- if you complete game on Hard difficulty - anoyher levels of difficulty not counts! and this is so frustrting.
LifeLover: Yes, all achievements are real to get. If you don't know how to get one or another you may try to find help in different sources - there are alot of PC game manuals, one of them helped me to get one really sneaky achievement -
Steam Achievements Guide. You could try to find necessary info in it ;)
Many thanks for your help and yes - I do have problem with some achievements and hope, that now I will collect them all.