* AssPull: To some, [[spoiler:Zead/Death]]'s revelation that [[spoiler:only the Devil Forgemasters can suffice as Dracula's host.]] Sure, this is another prime example of how clever a manipulator [[spoiler:Death]] can be [[spoiler:when not under direct orders from Dracula]], but the fact that all info pertaining to the crux of this plan gets dropped literally at the climax of the game (causing yet another [[spoiler:[[HijackedByGanon Hijacked By Dracula]] plot]]) doesn't help in the slightest.
-->'''[[spoiler:Zead/Death]]''': Even so... [[spoiler:Devil Forgemasters alone are suffused in my master's magic; thus, only a devil forgemaster can be a vessel for his re-awakening!]]
* SugarWiki/AwesomeMusic: Plenty, but the one in [[https://www.youtube.com/watch?v=sAPr9AAKVlY Isaac's first boss fight]] is awesome.
** The track that plays in the Cordova Town area is also a standout piece.
* BrokenBase: Many fans were upset that, given that the game chronologically takes place right after ''VideoGame/CastlevaniaIIIDraculasCurse'' and his role in it, the series' EnsembleDarkhorse Alucard was nowhere to be seen in the game, not even appearing in a cameo. While his absence didn't bother everyone, there were some who were somewhat glad he didn't appear, who felt he was becoming a bit ''too'' popular and was already [[SpotlightStealingSquad taking the spotlight away from everyone else]].
* DemonicSpiders: Pick any Level 75 enemy. Anyone. Ranging from the [[GoddamnBats Fleamen]] to the [[BossInMookClothing Red Ogre]].
* DisappointingLastLevel: Dracula's Castle is perhaps the most bland level in the game, in terms of stage design and visuals.
* DracoInLeatherPants: Isaac gets this kind of attention. Helps that he literally is wearing leather pants. According to Michiru Yamane's commentary in the Sound Select mode, he was the most popular character among the female staff members.
* FoeYay: A metric ton of it, courtesy of Isaac to Hector.
** Also Isaac to Trevor -- kissing his hair after impaling him from behind.
* GameBreaker: Corpsey's Bone Storm. It deals a lot of damage to the enemies, makes Corpsey invincible while using it, can stunlock some enemies, and is cheap to use too.
* GoddamnBats: There are enemies that qualify as this trope, but oddly enough, there aren't any actual bat enemies in ''Curse of Darkness'' at all, unlike the rest of the series.
* HarsherInHindsight: One of the chairs you can collect is a pachinko machine. Given how Konami stopped making traditional ''Castlevania'' games in favor of pachislot and pachinko machines, what was funny before isn't.
* HilariousInHindsight: In the English dub, Hector was voiced by Creator/CrispinFreeman, known best as the voice of the vampire Alucard ([[NamesTheSame no, not that one]]) in the animated ''Manga/{{Hellsing}}'' series, while his bitter rival Isaac was voiced by Creator/LiamOBrien. Several years later, ''Hellsing Ultimate IX'' would see Alucard, [[spoiler: revealed to be Count Dracula himself,]] facing off against [[spoiler: young Walter]], both voiced by Freeman and O'Brien respectively. Some fans of the game certainly got a kick out of this.
* HoYay: Between Isaac and Hector, Isaac and Trevor, and Isaac and everyone but Julia [[spoiler:who is his sister]].
* {{Narm}}: The dialogue can get like this, as it tries to sound Shakespearean.
* NightmareFuel: The dungeons of the Garibaldi Temple, [[spoiler:especially outside Legion's room. And Legion itself.]]
* ThatOneBoss: Every boss starting with the first encounter with Trevor Belmont. Especially Dullahan, what with his shockwave attack. And the boss before him? Trevor, ''again''. He's even ''worse'' the second time.
* ThatOneLevel: Dracula's Castle is easily among the worst levels in the game. It's not particularly hard, but going through the same few rooms over and over again gets to be a hell of a drag.
* ThatOneSidequest: Some of the game's better and... wackier weapons require hard to find items, some of which are boss-only steals. Stealing items requires the enemies to be in a particular frame of motion. Oh, and did you happen to miss a key item from a boss? No worries, you can fight them again! Provided you boss rush through all the bosses in the game that is. Not too bad, until you remember that every boss past the first two are ThatOneBoss. One of them ([[spoiler:Death]]) actually requires you to raise up a fairy with the ability [[MythologyGag Invincibility Jar]] to get to him when he's vulnerable to stealing and time it so that it runs out right when his SphereOfDestruction attack ends (since you can't steal while invincible), or learn how to perfectly block all his hits. [[note]]As for the timing of using the Invincibility Jar, pay attention to his hands. His fingers will go in and out while he's holding the orb, but before he throws it. The first time they go outward, let the jar fly and it'll burn out just as soon as his attack concludes. It's hard to explain, but you'll understand when you see it.[[/note]]
** There's a slightly easier way to do the above by turning down the music volume so that you can hear when the attack is about to end and switching [=IDs=] causes the invincibility effect to end instantly, eliminating the exact timing element to a large degree.
* TheyWastedAPerfectlyGoodPlot/[[TheyWastedAPerfectlyGoodCharacter Character]]: Trevor Belmont's role in the main story is abruptly cut short towards the end when [[spoiler: he's stabbed by Isaac upon the resurrection of Castlevania. Although Julia saves him from death and is said to be in critical condition]], to the surprise of many, he's not seen or mentioned again for the remainder of the game, [[WhatHappenedToTheMouse not even in the ending]]. Although this keeps the story focused on Hector, fans felt Trevor should have at least appeared in the ending to congratulate Hector on [[spoiler: killing Dracula and destroying Castlevania himself]], and/or show him being treated by Sypha in a cameo appearance.
** This was also a reaction towards Trevor Mode, which like many games before it, has no story or plot.
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