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.
Anti-Climax Boss: Justified — the Mask wants to take revenge on the Corrupted for an eternity of slavery, so he summons them — and instead of putting them in Dr. West's super-bodies, the Mask traps them into a relatively weak body made up of the corpses of Rick's victims, forcing them to face an humiliating (but not total) defeat.
He became so popular with fans that when the new Splatterhouse was announced, fans begged to have Biggy Man return — so Namco Bandai made it happen.
Freud Was Right: One of the monsters in the 2010 version, the Abhore has a huge, bloated right arm that leaks pus but it looks like some other whitish fluid. The Terror Mask lampshades this in one of the encounters with the Abhore:
From the 2010 game comes the Aegis: a tentacled horror that never attacks on his own, but makes all other monsters invincible (except for Splatter moves and weapons), actively runs away from you and teleports away if you get too close, forcing you to use the shoulder tackle to pin him down. And since the thing LOVES to hang around exactly in the middle of enemy crowds...
The Blue Homini and the Mirror Jennifers. They can slice off your arm in one slice, kill you in two, or even decapitate you. And when you're unarmed they take forever to kill. And towards the end, they start coming in groups.
Most Annoying Sound: The Giant Boreworm in the third game. It's horrendous laugh will echo through your head for the rest of the game.
Narm Charm: The new version goes for an incredibly schlocky B-movie feel, complete with a couple of narmy Big Nos from Jen.
From the remake: "No Rick, FUCK YOU." 200 years, and you're telling us you can't come up with a better come back?
Needs More Love: The 2010 remake. The game is not far from perfect, but it's also far being terrible as critics blasted out it to be. The game has a solid pacing (once you get past the initially sucky tutorials), a good load of narrative compared to originals, plus the voice-overs are top-notch (FuzzyLumpkins is the Terror Mask for crying out loud). You can tell Namco put their hearts into it and made the game a big love letter to long-time fans of the series.
Nightmare Fuel: The gore won't be the only thing that will keep you up at night. Tread here if you see the horrors that goes on with the series.
In the third game when Jennifer slowly gets eaten alive from within by a boreworm, and if you don't save her in time, she turns into a mindless beast.
The most common reaction of players encountering with the Teddy Bear in Splatterhouse 3: "H-hey, what's with the big teddy bear? Let's kick its ass! [beating ensues] Ha ha, I could do this all d—Woah, WHATTHEFUCKISTHAT?!"