I've played other Blackheart games through to completion and I have mostly enjoyed Seath's games. The Guardian is still one of my favorite AVN's. Seath is actually a pretty clever and good writer. This one has a few problems though. So far at least, it feels hastily thrown together with less "quality control" than what I'm used to seeing in Blackheart games. There are several examples of this without getting into specifics:
Dialog that doesn't match the scene/render we are seeing in front of us. Characters behaving/having inconsistent knowledge or maturity levels. Decisions made in part one not carrying over to part two, and then part three. An ever changing and expanding cabin.
It is also difficult to follow the story once the the subplot gets brought in. There are years between games, and each game takes months and years between updates. Now add that we are playing multiple games at once and over a period of years. I think cross pollinating storylines and characters from other Blackheart games only caused confusion for me. Don't get me wrong, it's a nifty idea, but for me at least, it's asking to much of my recall abilities. I think a new story, all new characters, a completely stand alone game disconnected in every way from any other game would have been more enjoyable, but that's just my opinion. I know many authors have an affinity for tying their various works together in some way. (Brandon Sandersons Cosmere comes to mind)
The characters are cute/pretty, the animations are decent but might be getting a bit basic when compared with todays competition. Animation loops are getting longer and more intricate in some other games out there. I do hope this game gets picked back up again, and some time put into polishing the rough edges.