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.
Anvilicious: From the second game's opening scene, it's shown how the students at Fallcreek only care about two things. Then just in case the player didn't get it, it is then stated outright, through a report in the hospital level, that the infection which consumed everyone on campus was spread due to rampant sex and drug use. To really drive home the point that those are bad things, by the end of the game all the characters that were partying at the beginning have been killed off, mostly in an arbitrary fashion.
Contested Sequel: While the Anyone Can Die mentality and minor differences between the characters were enjoyed in the first game, the second game introduced some twists. The scripted deaths, starting with Jun, really turned off a lot of the fans.
Cult Classic: The games have developed a very strong cult following in the years following their release.
Ensemble Darkhorse: Corey and Mei ended up being the most popular new characters introduced in the second game. A Google image search for Mei alone brings up a good deal of fan art of her, and Corey himself has a few. It helps because Mei suffers a completely unexpected and brutal death at the hands of Kenny and poor Corey commits suicide after being unable to deal with her death by the end of the game. Their popularity resulted in a (sadly canceled) spinoff game called ObsCure Survivor, which was supposed to be something of a light gun game and was to explore Corey and Mei's characters and relationship further. Game Informer even listed Corey and Mei #14 in their list of Video Games' Cutest Couples.
Foreshadowing/Fridge Horror: Hey, remember in the "nightmare" stage at the beginning of the game, where Mei and Corey encounter Jun, Sven and Amy's mutilated corpses? Take a good look at the manner of wounds that seem to have done them in. A quarter of Jun's face and entire right arm have been torn out, Sven's missing both his arms and has a gaping hole in the middle of him, and Amy's corpse is lying upon a large flower with her arms streched out and her entrails spilled out of her stomach. What does this have to do with anything? Jun's wounds seem to imply mauling at the hands of an animal, Sven's implies chainsaw injuries, and something seems to have bursted out of Amy's stomach. Mauling at the hands of a monster, a chainsaw, and a monster infant is what kills the three respectedly!
Goddamned Bats: The Flyers in the second game. They're fast, they attack in groups, and they're almost impossible to hit with melee weapons, force you to waste precious ammo to defeat them.
Moral Event Horizon: Former hero Kenny, following his mutation, takes a flying leap over the horizon following a Face-Heel Turn, starting with crushing Mei's head under his heel while her boyfriend Corey watches, then abducting his girlfriend Amy to repeatedly rape her offscreen.
Moral Guardians: Back when it was released in Britain, one paper openly criticized the game on their front cover due to Corey's suicide, despite that it was treated extremely seriously. However, this was around the same time as the Manhunt 2 controversy...
Nightmare Fuel: The mannequins that appear in the dream sequence of the prologue from the sequel. And that sound they make when you hit them.
Strangled by the Red String: Shannon and Stan in the second game. Granted, there is a Time Skip between the two games, but there is no mention of it previously, and their kiss just comes out of the blue.
They Changed It, Now It Sucks: The 2.5D spinoff brawler Obscure D was set up to become a full series reboot following acquisition by Focus Interactive. Eventually it was rebranded as its own original title, Final Exam, following fan backlash.
What an Idiot: You're barely fighting off the spores in your body, even with the help of medication, so why would you deliberately inhale a whole bunch of them, Kenny?!
The Scrappy: Stan. In the first game, he is almost an Optional Party Member, except for the fact that you need to get into the room (Shannon and Ashley went to find the missing Kenny, and Josh tagged along because he had a crush on Shannon, and Kenny joins after he's rescued.) In the second game, he literally drops in 3/4 into the game following Mei's death with nothing more than a cameo appearance in the introduction. He then gets into a relationship with Shannon and becomes the main hero because of Corey's suicide. He could have been written out and the plot wouldn't have changed at all.