Ok, reached the epic final, and giving feedback as requested :D
While I had problems for running in my desktop PC (an old PC) it worked fine in my Asus Laptop with just some lags in audio during time travels. This could be also because the disk is 95% , no much room left.
The game takes all the atmosphere of the original game, with great music, dialogs and puzzles, and just hope Kepler could live to see the end :D
Honestly speaking was stuck 2 times and used community clues, but was more because my lack of patience than for being really hard to play. Must say I guess I also took some walktroughs in the original.
Total playing time about 2:30h
Now I hope they can keep working before lawyers come :D