* BaseBreaker: Shadow Storm is a really good example.
** The Necromancer Vs. Paladin war was one of the greatest BaseBreakers in recent years. To the point of it having made the writer of the event swear off writing multisided wars at the end. That is until he wrote up a four sided faction war that has just about as strong opinions for each side...
* ContinuityLockout: Since AQ is the [[EarlyInstallmentWeirdness first game]] in a long list of ''other'' [[Creator/ArtixEntertainment AE games]], new players uncertain about how ''VideoGame/DragonFable''[='=]s shared [[AnotherSideAnotherStory timeline]] (or even how [[VideoGame/AdventureQuestWorlds AQWorlds]]) had fitted into the whole ''timeline'' of events, require some [[ViewersAreGeniuses thought]] about the whole storyline... This can be [[MindScrew very confusing]] for people.
** The fact that quite a bit of the back story can only be found at [[AllThereInTheManual the forums]] certainly doesn't help.
* DemonicSpiders: Sneaks (A type of snake) are probably the most common, but they're getting edged out of their position as "King of all monsters that make players tear their hair out." The most obnoxious thing about them is that they're very, very difficult to hit with anything except a ranged attack unless your character has high dexterity. However, some more-recently-introduced monsters are just as hard to hit or worse, and they don't have the ranged weapon weakness. And since status effects were introduced fairly late, monsters that use them are really, really obnoxious.
** Mighty Shadow Hydra have the ability to stack bleeding status effect which inflicts harm based damage whenever it hits you with its attack, and all of its resistances are lower than 100%. Bring it down to half health, and it summons its second head, increasing its damage output and bleeding, to the point that it can deal somewhere around 500 damage per turn. Put sinply, you need to handle it quickly before its damage output snowballed out of control.
* GoodBadBug: During the "Divide by Zero" war, the monster pool was abnormally strong, leading to waves of monsters that were 30 levels above the character's level. This also meant farming was made easier, but slowed war progress.
* MagnificentBastard: Drakath (now a dragon)
* PlayerPunch: [[spoiler: Galrick and Vampire Slayer E.]]
* ThatOneBoss: The "Unbeatable" and Void monsters are mostly designed as these.
** The most recent example is the Shadow Storm, which is a big reason for its status as a BaseBreaker. The way it works is, it starts the battle with a powerful 2 hit SP attack that randomly hit with light or darkness element, and it spent the next four turn to recharge its SP and HP until it can use its SP attack. Rinse, and repeat. Its SP attack also have an effect to reduce your damage output, and you have 25% chance to get stunned and do nothing. It actually have quite a low starting HP, but it has a much higher maximum HP which means it can regenerate itself until it has five times its starting HP if your offensive power is unable to compete with its massive HP regeneration.
*** Shadow Storm was even worse In its original version, because of a programming mistake which caused its damage output to be doubled, enough to outright one shot a fragile character if they are caught in the wrong armor set up. This bug has been fixed, and the Shadow Storm has been re-adjusted since the damage fix.
* ViewersAreGeniuses: The [[YourHeadAsplode Devourer Saga]] is enough to induce a few headaches, as well as the constant [[ShoutOut references]] to other TV-shows and the HurricaneOfPuns help slightly.
* ParanoiaFuel: Somethings. During Halloween 2011, 500,000 of them were released into the game. They appear small and harmless enough, but [[FaceStealer they EAT other animals or people and take on their characteristics.]] They could be anyone. They could be everyone.
* {{Vaporware}}: "The Sweep" - sort of. It's an ongoing rebalance operation which is supposed to be applied to older items as well as new ones. Whilst all new items are at the new standards, most older equipment has yet to be fixed.
* WordOfGod: Mostly, Falerin. (In this case, literally. Falerin, the head writer, is also the NPC Caelestian God of Evil.) With Lord Barrius and Eukara coming a close second. Of course, none of the other writers (and the team)'s comments are considered any less informative/important despite this.