I have to say Nancy Drew Ransom of the Seven Ships and Mysterious Island 2. I probably will not finish them. They were hard for me even with Mags walkthrough. I may try to finish them one of these days whenI get an interest to.
I was very let down by Paradise. I enjoyed Syberia a lot, particularly as it had solid gameplay, but Paradise was riddled with so many bugs, confusing scenes and nonsensical plot, it has put me off trying a Benoit Sokal game again