What the crap does the Cake From Hell have to do with anything? Even in one of the videos made to hype up the game, it cuts to him saying his name for no discernible reason and the video then moves on without any reference to it again.
Crosses the Line Twice: Just about everything. Killing an insane old man after stealing his son's possessions, murdering several people outside the attractions, and killing a child to be buried with the other toy he liked are among these moments, though the worst (best?) moment has to be Eriko's father only approaching her in the true ending because she's naked and he finds her attractive.
Dummyman, a recurring enemy that appears in certain spots of the game. He appears to be one in universe as well, as movie posters advertising Dummyman movies are all over the place, and he even has a photo shop!
Killerman. The manual states that he has a movie series as well.
OHNOMAN, the most popular of the three final bosses. Mostly due to his name.
Zodick The Hellhog is one of the games most well-known characters, and gets a fair amount of fanart.
Good Bad Bugs: Opening your map causes the enemies to freeze for a few seconds when you close it. Vital for avoiding tougher battles (like when you're a Woodpuppet).
Harsher in Hindsight: In this game, one of the ways to die is shock death, where your heart pulse rises, and if it rises too high, you die. The creator of the game, Shinya Nishigaki, died relatively young of a sudden heart attack just a few years later.
The villain of the Homerun of Death, Banballow, is horrifying... right up until you hear his bizarre voice and deranged ranting.
Narm Charm: David's story in level 2 is goofy as heck, but it's also sweet in a weird way; from the way he talks about her, you're made to think Rachel was his honest-to-goodness daughter for much of the stage.
Nightmare Fuel: Make no mistake; there's a lot of very creepy and disturbing atmosphere underneath all the cheesy stuff. Examples:
Playable characters other than Eriko will fall down and crawl away from enemies for a long moment, allowing them to get many hits on you. Picking up the Shock Brace item removes this limitation, however. This is actually a bit of Gameplay and Story Integration, as Eriko's backstory explains that, being put through shock tests since childhood, she's pretty much desensitized to being Jump Scared.
The analog controls for movement mean you that have to push up gently to walk and briskly to run, which would be fine if you didn't have to release the analog stick completely to switch between the two.
So Bad, It's Good: A large part of the game's cult appeal comes from how unapologetically bizarre it is.
Trent The Tree in "Woodpuppets" is considered annoying by fans of the game, since you have to get through the aforementioned Woodpuppet section to fight him.
The three Killer Worms you have to fight outside the produce aisles in stage 4. Presenting a moving target by darting around like a madman and landing single blows whenever you can is the only reliable way to beat them at all, and they can still very easily crowd around you even then.
Bullstinger, the hardest of the three final bosses.
The Cutey Mary section of "Killer Department Store", especially the jump-rope, are notoriously irritating among fans of the game.
The section in "Woodpuppets" where you become...a Woodpuppet.
Uncanny Valley: Henry, Cork's owner in Toy Hunter. Doesn't help that he mostly appears as a massive closeup of his detailed, unmoving face. His poor voice acting doesn't help much. It's likely intentional, given he's an animatronic in a park designed to scare people. Worse yet, he appears as a rotting corpse later on...
Unwinnable by Insanity: Averted in Stage 4, by design. You need to have $200,000 to enter the toy aisles of the department store, but even if you deliberately blew all your money before entering the stage and then wasted as much of it as possible on the stage's traps, there's no way to get stuck at this point: You're given the $150,000 prize up-front, there aren't enough money-stealing traps to take more than $50,000 away from you, and there's an extra $100,000 in a hidden vault just before you reach the toy aisles.
Toy Hunter during which you end up in a Toy Story clone in which Woody becomes an alcoholic, murders innocent people, then tries to die so he can go to hell and be reunited with his girlfriend. It also involves a talking rocket ship, a haunted town, and singing eggs.
The True Final Boss is Eriko's dad, Michael Reynolds, who melts into a puddle with his naked daughter wading through it as she fights his giant, eyeless melted head that shoots rainbow beams. Then the head splits open and reveals a flying brain tentacle monster. Woo!