With several other reviews going into incredible depth about all of the options contained in this book, I am going to take a different approach and go into detail about why I gave this book a five star rating.
First off, Red Love is an amazing NPC and I look forward to using her in a campaign hopefully in the near future. She performs her role as Iconic flawlessly, tying the book together by leading you on through her descent into madness and violence and wrapping up the book with her terrifying stat block.
The art is succinct, stylish, and truly conveys the horror that she embodies. Her stat block is not so optimized that an unprepared party will be slaughtered, but she has some very defined combat niches and she uses them adeptly - beware her blinded condition!
Next, we have the Symbiotic Slayer - notable because of how versatile it is! I believe it is worth mentioning as other guides have misunderstood, you control your familiar - and thus you control your character when your Symbiote takes dominance. It is instead, a second character to explore. Of course, there are feats that make it so you can reduce the ego if you do not wish to have it be a bother. But the talents are so diverse!
You can make very respectable versions of many symbiotes such as Carnage or Venom. Something I want to bring up and remind people, is that Weapon Master’s Handbook brought with it weapon creation rules - so if you wanted ‘attached’ weapons more potent than the (spiked) gauntlet, it is only a single Design Point away.
The Protean Prowler has a special place in my heart, because they fulfill a niche I have long been waiting to utilize - an Eidolon style PC without the trappings of the flawed Summoner class. Mister N. Jolly has outdone himself here, as you can truly feel like a Protean with these effects underway - changing form and function as it suits you day by day with a generous number of ‘recustomizations’ per day.
Of course, those who adore Polymorphing can just as readily explore a true wealth of transmutation options or even use them to create a conjoined whole of Eidolon evolutions accenting a base template. Unless your DM is unusually strict, you should be able to describe your new form as you please - I hope to see some more reviews talking about what people have come up with!
Then we have the Shadow Savant, a unique subclass that can be strongly likened to Zed from League of Legends. However, with the greater freedom in designing abilities the kit is taken to its logical extreme and the result is amazing.
You have quite a few options to work with here, from being a faux shadow-evoker to using your shadows to distract, or even fighting alongside increasingly real shadow clones who gain improving action economy.
I won’t lie to anyone, I am a huge fan of N. Jolly’s work... But this book goes above and beyond anything I have expected! I feel this book has more than earned its five star rating, and invite anyone who is on the fence about it to pay the cost of admission - I will frankly guarantee that any fan of the Vigilante will find more than a few things to utilize here.
[5 of 5 Stars!]