So I played this a lot this weekend because it was a free weekend, and I gotta say... The gameplay loop is intensely satisfying.
It's a pretty brutal mix of PvP and PvE with a western/horror setting that works really well. The environment design does a great job of immersing one into the setting and keeping things tense.
The monsters encountered can all be frightening due to the way weapons work, as this isn't Vermintide and you can't just wail away fast as lightning. Melee attacks have wind ups and these are shotguns, revolvers, and repeaters you're firing; don't expect much more than a round or two per second firing rate. Which is kinda good, because ammo isn't plentiful.
The boss mobs you're competing against other Hunter teams to kill and banish are serviceable, but could be a lot better. I enjoyed the spider much more than the butcher, merely because the way the spider moves and can crawl up walls and on ceilings makes it a much more vicerally enjoyable exeprience. The butcher could use more memorable combat tactics, as he's merely a big lumbering bullet sponge with heavy attack damage.
I think it's worth the price tag on it currently as the PvP element keeps things interesting, but could only see myself paying $40-60 with more optimization (it doesn't look good enough to warrant lower settings than I run in Witcher 3) and a few extra maps and boss mob encounters.
All in all, it's a really solid framework for a really great title. The game mode is certainly unique enough to set it apart from anything else available currently.