Note: The Creator/LarryNiven[=/=]Creator/JerryPournelle [[Literature/{{Inferno}} novel]], the Creator/DarioArgento [[Film/{{Inferno}} film]], the Marvel [[ComicBook/{{Inferno}} comic]] and the ''VideoGame/FreeSpace2'' [[VideoGame/{{Inferno}} game mod]] pages link to this YMMV page.


[[folder:The Novel]]
* {{Anvilicious}}: The Abrahamic God is evil! The Abrahamic God is evil! The Abrahamic God is evil! The Abrahamic God is evil! ''We fucking get it!''
* EveryoneIsJesusInPurgatory: How does the sequel end? [[spoiler: A carpenter in Hell nukes the frozen plain of traitors,]] giving them the option to leave Hell. Can you think of any other famous carpenters who were in Hell and gave the Damned the option to be forgiven? (Hint: It was Jesus.)
* FunnyAneurysmMoment: Among the souls encountered during the brief flight of the glider is a pilot of the Space Shuttle - who died, in Carpentier's future (it was written in 1976), when it suffered a failure of the heat shield, and well..."halfway down and going like a meteor when we got a burnthrough under the nose" took on terrifying truth in 2003.
* OneSceneWonder: [[spoiler: Lucifer, chewing legs like cigarettes makes eye contact:]]
--> [[spoiler: "Carpentier. What will you tell God when you see Him? Will you tell him that He could learn morality from Vlad the Impaler?"]]
* TheyWastedAPerfectlyGoodPlot: Carpenter's refusal to accept that he's in ''Hell'' means that the reader, who can only see the setting through his eyes, is kept insulated from the setting for most of the book, effectively robbing the story of a point.
** Dante Aligheri filled Hell with real people. Given a chance to do the same, Niven and Pournelle chicken out and make up almost all of the damned.
* ValuesDissonance: The constant conflict between the strict Christian morals demonstrated in Hell and Carpent(i)er's modern, secular values (probably also those of the authors) lead him to conclude that GodIsEvil. However, the fact that most people nowadays are uncomfortable with the concept of infinite damnation for finite sins leads to a FamilyUnfriendlyAesop: [[spoiler: anyone in Hell can escape if they can get over themselves enough to seek redemption. Even if their punishment involves complete immobility or vigilant guards. Then again, there seem to be souls whose duty is to guide others, including Benny - and ultimately Carpenter himself]].
** Dante's ''Inferno'' was also based on older concepts. The sequel is post Vatican 2, and thus deals with it very differently in dealing with the values dissonance.
** The guards almost never stop anyone from going deeper into hell, as very few believe anything exists down there but worse punishments. And the sequel has Carpenter dealing with the people that are trapped and immobile, trying to prove to himself that his idea that anyone can leave is correct.
** The middle ring of the seventh circle is the Wood of Suicides in Dante's ''Inferno'', with a sideline in punishing the "violently wasteful" (profligate). Now, the wood is gone and the profligate are far more numerous. (Examples in StrawmanPolitical).
** One to readers of this day and age: Carpenter protests when he sees a woman included in the circle of the rapists. Modern readers, who've come to see rape as a crime without gender, will probably throw the book into a wall at that point.

[[folder:The Film]]
* AdaptationDisplacement: Few fans of ''Film/{{Suspiria}}'' are aware that this is supposed to be a sequel (to be fair, the two films have little in common plotwise, other than the overarching mythology, which Suspiria makes almost no reference to). The third film, ''Film/MotherOfTears'', remedies this by directly referencing the plots of the previous two. However, fewer still are aware of the Thomas De Quincey poem, "Literature/LevanaAndOurLadiesOfSorrow", on which the mythology is based.
* AlternateCharacterInterpretation: [[spoiler: Mater Lachrymarum]] is heavily implied to be hypnotic and meddling in Mark's life while in Rome. How much of what follows is someone else's idea?
* AntiClimaxBoss: [[spoiler: a much more extreme example than ''Film/{{Suspiria}}'' in Mater Tenebrarum, whose demise occurs due to an accident earlier in the film.]]
** NeverFoundTheBody, though. [[spoiler: Tenebrarum's death is far from clear, as she simply vanishes amid rising flames. She'd previously disappeared and reappeared in a mirror just a scene prior, and her transformation into Death presumably makes her more difficult to kill than Suspiriorum in the previous film. Then again her theme song which includes ominous Latin chanting in her honour says at the end "Matricidium Tenebrarum" which means "The Mother of Darkness is killed" and spoils the ending]]
*** [[spoiler: Considering the last shot of the movie has Tenebrarum screaming as her house collapses around her, it'd be reasonable to assume she died with it, much like her predecessor.]]
* AwesomeMusic: The [[ theme]].
* CompleteMonster: [[OneBadMother Mater Tenebrarum]], the Mother of Darkness, is the youngest and cruelest of the [[WickedWitch Three Mothers]] responsible for the creation and spread of witchcraft itself. Setting up residence in an apartment complex within New York after forcing the architect Varelli to construct fortresses for her and her sisters, Tenebrarum keeps Varelli as her mute, handicapped slave after he serves his purpose, killing anyone who comes close to finding her secret. Tenebrarum, through the film, [[CruelAndUnusualDeath brutally murders Sara and her neighbor]] after [[HeKnowsTooMuch they gain too much information]]; nearly decapitates Rose by slamming a pane of glass through her neck; viciously torments and murders the Countess Elise; has the owner of the shop next to her lair partially eaten by rats then stabbed to death, and [[EyeScream gouges out the eye]] of Elise's corrupt butler. A sadist by nature who perfectly reflects the evil the Three Mothers embody, Tenebrarum well earns her status as the cruelest of her sisters.
* EnsembleDarkhorse: Mater Lachrymarum
* EvilIsSexy: The mysterious woman in the music school [[spoiler: who WordOfGod later confirmed was Mater Lachrymarum.]]
** Perhaps not sexy, but Mater Tenebrarum is revealed to be especially pretty.
* {{Narm}}: "Help help, the rats are eating me!"
** The cat attack. The close-ups of the cats' mouths are more cute than scary.
** [[spoiler: Mater Tenebrarum's transformation into Death]] looks too much like a cheap Halloween costume to be frightening.
* SpecialEffectsFailure: The cat scene as well as a few others.

[[folder:The Comic]]
* DieForOurShip: Madelyne, obviously.
* EvilIsSexy: Madelyne as compared to Jean.
* HilariousInHindsight: Many, many years after resorting to this massive and hyped crossover -- which came about because Jean Grey had been brought back, and to clear the path for Cyclops and Grey's relationship and eventual marriage -- Marvel then decides that in order to attract new generations of kids to their comics, their lead characters, including Cyclops, must all be unmarried and single ([[ComicBook/OneMoreDay Spider-Man being the most notorious example of this policy]]). Also, Jean Grey's increasing redundancy of story lines and character arcs lead Marvel to have her sentenced to the ''DroppedABridgeOnHim'' (not counting the "time-displaced teen").
* IdiotPlot:
** ...So, nobody thought to check out Madelyne's DNA to see if it matched Jean's?
** Why didn't Sinister just use Cyclops and Jean's DNA to create the baby instead of going to such convoluted extremes? Made even worse because ''that's exactly what he does'' in the AlternateReality crossover, The ComicBook/AgeOfApocalypse.
** Chalk it up to being written in the 1980s before "CSI" made everyone an inexpert forensic scientist. DNA testing was advanced significantly in the 1990s, which coincides with its appearance in many crime shows.
* MoralEventHorizon: An attempt to kill a dozen innocent babies including your own infant son just has to count as this.
* NightmareFuel: Many instances, but particularly when Madelyne tries to kill her own baby.
* SpiritualAdaptation: ''[[Series/BuffyTheVampireSlayer Buffy the Vampire Slayer]]'''s season-5 finale episode, "The Gift", is suspiciously similar in plot to Marvel's ''Inferno'', but subverts and inverts Marvel's storyline by (temporarily, of course) killing Buffy instead of Dawn Summers, who in several details is nearly an {{Expy}} of Madelyne Pryor. (The episode's title is also the same as an X-Men story in which Pryor is a main character.)
* TheyWastedAPerfectlyGoodCharacter: The demon [[TheChessmaster chessmaster]] N'Astirh is introduced, and killed, in this story arc. Given that he's just another magic-user, fans who think Belasco, the sorcerer who turned Illyana into Magik in the first place, should have returned for this instead consider his introduction to be this.

[[folder:The Game Mod]]
* BestLevelEver: "Nemesis", the penultimate mission in the original story, has been praised as one of the finest [[TheWarSequence Battle of Endor]] missions the community has ever produced.
* DemonicSpiders: The Vindhacyl bomber. Uniquely, it's only so because of how hard it makes any EscortMission. Inferno-issue super-painful bombs, a not-shabby beam cannon in a forward turret, and ridiculous amounts of shield HP make it nightmarish to fight in an interceptor because you just can't ''hurt'' the thing.
* OnlyTheAuthorCanSaveThemNow: What exactly humanity was supposed to do against something like the ''Gargant'' was never really answered. Whether the ''Gargant'' still exists is also up in the air.
* ThatOneLevel: "Nemesis" is also considered this by many, because of its sheer length (playthroughs can run as high as 25 or 30 minutes) and existing long prior to a practical "checkpoint" system like in Blue Planet to allow restarting from mid-mission.