These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Anticlimax Boss: The final gauntlet with the wraith is either this or nigh-impossible, depending on how many lightstones you saved. If you have 9 lightstones, you can easily fend it off, and if you can trigger it, your Eleventh Hour Superpower makes the final battle a cakewalk.
Demonic Spider: The wraith after it evolves 90 minutes into the game. It suddenly moves at the same speed Kana does normally, and can appear at any moment...
Fridge Logic: It would be theoretically possible for the Agency to find out what wraith Kana was fused with. Couldn't they just exorcise it to return her to normal, instead of going through the whole true sainth process?
In that same vein, if Lily infused Kana with sainth essence, shouldn't the two cancel out and destroy each other, rather than just keeping each other neutral? Or did it turn Kana into God instead of cancelling out?
Lily's sainth didn't completely fuse with Kana, so it was neither able to cancel the wraith nor to form a god. It only gave Kana a way to hold the wraith at bay until she could figure out what to do with herself. Even that was limited, since Kana said the wraith was winning toward the end.
Girls Need Role Models: In an unusual twist for a game, nearly every female character in Wraith is a strong person.
Kana, though pulled into finding a way to defeat the wraith and save everyone in the manor by herself, is more than a strong main character and is portrayed as how a real woman might act in such a situation. Rather than crawling into a corner and crying, she takes charge and tries to uncover the secrets of the manor by herself with a soul-sucking monster on the loose.
Lily, as she stays cheerful and upbeat when she and Kana go to rescue the others. In one scene, it's her wit that manages to convince two characters from staying alone to become wraith chow.
The friendly mutant, who turns out to be Regina. Even as a little girl-turned-deformed monster, she jumps into battle and becomes a vital party assent.
In a sense, Erina Wellington, though mostly this is post-mortem. During the good ending, she forgives her husband for inflicting her cruel death and provides a comfort to her mutated daughter in her last earthbound moments.
Paranoia Fuel: The wraith can appear in a number of different places, in almost any room, and at any moment...