Saikoroshi is a solid followup to the main series even though the 8 original VNs don't really need an epilogue. It has its own angle on horror that makes it unique and will manage to catch you off guard. Hirukowashi is a joke story with the kind of tone that you usually get to start off the other episodes to make the horror more shocking later. It has some funny moments but the focus on the worst of Hugurashi's humor (adults swooning over kids) brings it way down. Batsukoishi is horrible. Skip it.
The opening hour of this action/survival horror game includes a few minutes of action and no horror or struggle to survive in multiple scripted battles where you are handed all of the equipment you need beforehand. Other than those few attempts at excitement, you wander around uninteresting dark brown settings and get knocked out and woken up repeatedly for story progression.
Not worth the trouble. Controls are bafflingly bad and only listed for the keyboard. They don't even match what is shown. If you have a controller plugged in it only works during battle and PART of navigating the menus. And 15 seconds for selection of four characters across a roster of 36? There's no way that anyone involved in porting this actually tried to play it.