This was a really good game. It was nice and long with an intriguing story line. However, there was one major annoyance for me - too many HOS. I did like that you could revisit the same area for a different game, but it seemed that every time I turned around there was another HO! And they weren't all that interesting, plus the visuals were dark and hard to see. I am hoping that the sequel has more puzzles or at least clearer, more interesting HOS.
This SE game could be a CE. It's got a fairly interesting story line, challenging puzzles and HOS, and even a bonus chapter. My only complaint is that the hints usually did not help very much. I really enjoyed playing this game.