History YMMV / Terraria

** "Supreme Helper Minion". Better hope you have the patience of a saint, as this requires you to complete ''200'' angler fishing quests. And since [[ScrappyMechanic only one quest can be done per in-game day]], this will involve ''lots and lots'' of waiting. To put in perspective, you could theoretically do about 60 quests in a real-time day if you stayed up and were playing constantly. That means ''three'' real days of non-stop gameplay to complete 200 quests. Thankfully this achievement counts up alongside the other achievements related to quest fishing and the process can be slightly sped up with the Enchanted Sundial to skip to 4:30 AM (when a new day starts), or as of Journey's End, sleep in beds to speed up time. Only problem is the Sundial has a cooldown of its own that lasts a whole in-game week or 168 real minutes.

* CreatorsPet: Some have accused the Mage class as this. The Mage class consistently keeps getting more and more weapons/accessory/armors with almost every update, usually at the expense of other classes that don't ''nearly'' have as many options like Summoner. Many have noted the sheer number of mage weapons that can easily be summoner weapons[[note]]The Nimbus Cloud, bee/wasp gun, and many other items that even have 'summon' in their description[[/note]] but are still classified as mage weapons for some reason. It also gets notable that a there's a large number of buff potions that are specifically geared to mages. Normally it wouldn't be a problem but it has caused a rather nasty side-effect of promoting a StopHavingFunGuys mindset in the community and on certain servers. See below for more details on that.
* CrossesTheLineTwice:

* SelfImposedChallenge: "Class playthroughs", beating the game only using one of the damage types, is quite a popular one. Can be taken to its extreme if one imposes it strictly[[note]]most class playthroughs usually use a sword starting off until you can actually obtain/craft a weapon of the desired type, and many players prefer to keep a sword and summon handy even if not playing melee or summoner[[/note]], which makes Mage and ''especially'' Summoner [[EarlyGameHell rather brutal starting off]], as you're at the mercy of the world generation to find a weapon of your desired type quickly, only able to use blocks to protect yourself until then.

* WhatDoYouMeanItsForKids: 1.2 introduces the Crimson, filled with nightmarish creatures and blood and gore everywhere. In a T-rated game. Most enemies also explode into LudicrousGibs when they die, which also isn't exactly kid-friendly.

** While not Expert-exclusive, the Moon Lord's Phantasmal Deathray definitely counts. It's a massive laser fired from his head eye which sweeps a wide area, is deceptively hard to avoid and deals absolutely ludicrous damage (150 on normal, ''300'' on Expert). While it takes a second to charge and he doesn't use it a lot, you best be prepared every time his head eye opens up - especially since you can only damage the forehead eye ''while the laser is being fired'' and for a short cooldown after that. The only saving grace is that the laser is blocked by terrain... at least, until Journey's End hit, as the Phantasmal Deathray was buffed to be able to go through blocks between it and players, much to the dismay of them, but to balance it out, the amount of time the forehead eye has been increased slightly.
*** His True Eyes of Cthulhu in his second phase can use a smaller version of this. While it deals a lot less damage, it's much faster - and there's nothing stopping [[OhCrap all three Eyes to use it at the same time.]]
** Also not expert-exclusive is the Martian Saucer's DeathRay. This attack hits ''extremely'' hard, dealing 140 on normal and 200 on Expert. When its other parts are destroyed, it will constantly spam this attack, while more than doubling its damage to a whopping '''300''' on Normal/'''''450''''' on Expert! Again, the only saving grace is that the attack is blocked by terrain... until Journey's End, where it will also pass through blocks between it and players. Mercifully, Journey's End completely omits its second phase altogether in Normal mode, now being obliterated when its turrets are destroyed.

** The Underground Jungle. It's a humongous cavern that stretches from below the Jungle to the Underworld. What's so hard about it? It's a nightmare to navigate, it's swarming with Hornets and Man Eaters (horrendous DemonicSpiders), and it's got several rare and rather useful items hidden in it. (Enable hardmode in 1.2 and beyond, play in an expert or master world {or both} and its difficulty is boosted to BonusLevelOfHell.)

** The post-Plantera Dungeon, by and far. Originally it's dangerous but survivable and by the time you reach hardmode and have high end equipment it's basically a BreatherLevel. Then you defeat Plantera and the crap hits the fan. Suddenly the Dungeon is filled with extremely powerful skeletons that can soak damage like nothing, Necromancers that can bounce nigh-instantaneous shadow bolts around corners to hit you and teleport away whenever they take damage, Diabolists that shoot exploding, unblockable fireballs through walls at you and also teleport on damage, Paladins that have more health than some bosses and rapidly throw hammers at your face for massive damage, Skeleton Snipers that can two-shot you from across a room. Basically every enemy in the post-Plantera Dungeon is either a DemonicSpider or a {{Goddamned Bat|s}} designed to distract you while the stronger enemies kill you. Even after you kill them you're still not safe because there's a chance every enemy you kill might spawn a Dungeon Spirit which charges you at high speed, straight through walls! The good news is that if you can survive this onslaught you can get some of the most powerful equipment in the game here.
** The Lunar Invasion event is filled with several DemonicSpiders and GoddamnedBats near each of the pillars, all of which are ''far'' more durable and more painful than most of the things found in the post-Plantera Dungeon.

** The spread of Corruption/Crimson and Hallow quickly starts to become this upon entering Hardmode. Before, the evil biomes would only spread very slowly on the grass, which can be remedied by some Purification Powder, and can be segregated by planting sunflowers and/or digging trenches large enough to prevent any sort of spread. Upon defeating the Wall of Flesh, the Hallow and the world's evil biome blast in two straight lines from the Underworld without any means of predicting or controlling the outcome, and their spread is drastically increased, not only spreading at an accelerated rate, but being able to affect more terrain types. In addition, breaking the evil altars (which is necessary for unlocking the Hardmode ores) often results in a random block in the world suddenly turning evil/Hallow, and there's nothing you can do to prevent this. While the Hallow is new to the world and is necessary for new resources (and doesn't repel NPC living spaces), many would say that the evil biomes were better off segregated in their initial positions. No wonder the Steampunker's Clentaminator is such a valuable and expensive tool.

** For many players, 1.4's [[HarderThanHard Master Mode]] is this. Unlike Expert, which completely changes the game by introducing new items, new mechanics, and many AI changes on enemies/bosses, Master is [[NumericalHard virtually the same as Expert save for all enemies and bosses gaining highly inflated HP and damage values on top of more knockback resistance]]. To many players, it seems less like a heightened level of difficulty to test players, and more like an annoying form of FakeDifficulty that artificially inflates how hard the game is in the worst way possible[[note]]The few non-stat changes, like players dropping all their money on death and ''further'' increased debuff times, are also seen as less difficult and more plain annoying[[/note]]. Since nothing changes in terms of how enemies behave, most of the time Master just serves to make the game more obnoxious by forcing you to undertake the same combat as Expert while just making everything both more unforgiving and ''far'' more tedious. It's not an exaggeration to say that Master is exactly the same as Expert mode, but everything kills you almost instantly while taking far longer to kill - often resulting in an obnoxious, frustrating, and just plain ''boring'' experience. To add insult to injury, while Expert makes the increased difficulty rewarding by adding a variety of unique items, increasing drop rates, and the like, Master Mode has barely anything to justify its "difficulty" since almost all the exclusive rewards are cosmetic (even the added accessory slot and functional mounts rarely justify what you have to do to get them). It says something that the "For the Worthy" seed added as an EasterEgg is ''widely'' considered to be a superior difficulty, since it actually changes many game and boss mechanics instead of merely inflating stats. This is especially aggravating to modders, particularly those who have already created "Expert+" modes for the game (which are often considered superior to Master as well), to the point where some mods simply don't acknowledge its existence.

** The "Golden Shower" spell looks like [[DungFu weaponized urine]] (which is actually "Ichor") and would be down-right crass if it wasn't so hilarious.

* DarthWiki/MostAnnoyingSound: The little "shk-shk-shkshkshk" that a burrowing enemy makes when it's near you. You ''know'' the damn thing's there, but you don't know ''where'', meaning that you have to put up with the paranoia of the worm jumping out at you before you can kill it, as burrowing enemies will hound you until they die.

* MostAnnoyingSound: The little "shk-shk-shkshkshk" that a burrowing enemy makes when it's near you. You ''know'' the damn thing's there, but you don't know ''where'', meaning that you have to put up witht the paranoia of the worm jumping out at you before you can kill it, as burrowing enemies will hound you until thei die.

* SidetrackedByTheGoldSaucer: The [[http://terraria.gamepedia.com/Angler fishing minigame/sidequest]] is rather elaborate, with around 30 possible quest rewards requiring ''way'' more than 30 fishing trips to get them all because most are [[LuckBasedMission rare and random]]. Only one fishing quest is offered per in-game day, but they often eat up a lot of time and distract you from the usual exploring/fighting/building/boss-battling. Or you may realize that you often fish up crates, which sometimes contain [[SequenceBreaking high-level metals you aren't supposed to have yet...]] At least, prior to Journey's End as they'll be separated between pre-hardmode and hardmode crates.
* SelfImposedChallenge: "Class playthroughs", beating the game only using one of the damage types, is quite a popular one. Can be taken to its extreme if one imposes a 'no wooden sword mullgen' rule[[note]]most class playthroughs usually mullgen a wooden sword starting off until you can actually obtain/craft a weapon of the desired type[[/note]], which makes certain classes like Mage and ''especially'' Summoner [[EarlyGameHell rather brutal starting off]].

* PortingDisaster: In the Vita's case, suffered two major {{Game Breaking Bug}}s in its history. One, where after the 1.2 Update, corrupted all worlds that has the fireplace item. Two, which causes the vita to fail to save the game and cause a Crash to the Vita's menu.

** Sandstorms, a random event in the deserts, that causes a debuff that means you slow down dramatically if facing the wind, and can change direction, even with movement buffs you are reduced to a crawl, and trying to fly out of it pushes you back a bit, in Pre-Hardmode, this isn't that bad, there are rarely any reasons to want to be in the desert for more than it takes to pass through, but in Hardmode, it is hell if you are trying to farm the biome Mummy types for certain items, which only a few enemies drop, this actually veers into PortingDisaster territory for the current console version, as a bug has caused it so that the spawn rate for Sandstorms is ramped right up, meaning you will rarely have a desert that is clear, which, in the console version with a Crimson, is the only way to get the Blindfold item if you are making the Ankh Shield.

* MoralEventHorizon: The Player Character. In order to progress to the endgame, you must summon a boss in the Underworld, and in order to do so, you must [[spoiler:murder the Guide with the Guide Voodoo Doll. As of 1.1, it's clear that death is not cheap for the non player character allies, as when they die they are not resurrected, but rather replaced, and thus this amounts to murdering the Guide simply to progress in the game. Unless of course, [[TheScrappy you hate the Guide]] which [[TakeThatScrappy leads to...]]]]

** The guide NPC who functions as a newbie hint guide. Unfortunately, he likes to path around the players and can enter their normally safe houses, bringing the monsters howling at the doors inside with him. [=NPCs=] running from monsters who have gotten into their homes can also run to your house and open the door that kept them out.

** For many players, 1.4's [[HarderThanHard Master Mode]] is this. Unlike Expert, which completely changes the game by introducing new items, new mechanics, and many AI changes on enemies/bosses, Master is [[NumericalHard virtually the same as Expert save for all enemies and bosses gaining highly inflated HP and damage values]]. To many players, it seems less like a heightened level of difficulty to test players, and more like an annoying form of FakeDifficulty that artificially inflates how hard the game is in the worst way possible[[note]]The few non-stat changes, like players dropping all their money on death and ''further'' increased debuff times, are also seen as less difficult and more plain annoying[[/note]]. Since nothing changes in terms of how enemies behave, most of the time Master just serves to make the game more obnoxious by forcing you to undertake the same combat as Expert while just making everything both more unforgiving and ''far'' more tedious. It's not an exaggeration to say that Master is exactly the same as Expert mode, but everything kills you almost instantly while taking far longer to kill - often resulting in an obnoxious, frustrating, and just plain ''boring'' experience. To add insult to injury, while Expert makes the increased difficulty rewarding by adding a variety of unique items, increasing drop rates, and the like, Master Mode has barely anything to justify its "difficulty" since almost all the exclusive rewards are cosmetic (even the added accessory slot and functional mounts rarely justify what you have to do to get them). It says something that the "For the Worthy" seed added as an EasterEgg is ''widely'' considered to be a superior difficulty, since it actually changes many game and boss mechanics instead of merely inflating stats. This is especially aggravating to modders, particularly those who have already created "Expert+" modes for the game (which are often considered superior to Master as well), to the point where some mods simply don't acknowledge its existence.

** Played straight with the pre 1.3 Enchanted Sword, a rare sword with the ability to fire damaging energy beams with each swing. It is one of the rarest items in the entire game. The game has a small chance of spawning the Enchanted Sword somewhere underground in a destructible background stone when you first generate a world. There is no indication that the sword has spawned and since it's in a random spot underground you could potentially spend a thousand hours in a world with an Enchanted Sword and never know it's there. Even then, there is only a 1/3 chance that the sword in the background stone is the real deal - the other 2/3's are wooden swords that don't even drop upon destroying the stone. On the off chance that luck is in your favor, and you finally somehow manage to find an Enchanted Sword... you'll find that it isn't exactly groundbreaking, especially in comparison to the plethora of much more common, much more powerful items you can find even before Hardmode. It deals only one point of damage more than the Light's Bane, a low tier, fast-but-weak archetype of weapon. The ability to fire energy beams isn't all that special, even pre-Hardmode. The Ice Blade, another pre-Hardmode weapon, does the same thing, is almost as damaging, and is far easier to acquire.
*** Made significantly less junky and rare as of 1.3, where, in addition to the usual stone generations, very obvious Enchanted Sword shrines can spawn (structures with a vertical, one-tile beacon of negative space that stretches extremely far up, sometimes even visible from the surface) that are common enough to reliably find at least two or three with ease in a large world. The Enchanted Sword has also been buffed to now be faster than the aforementioned Light's Bane and stronger than the Blood Butcherer, a mid-tier, slow-but-strong weapon, with its sword beam now doing it much more of a favor with the increased damage, ultimately bringing its newfound power much more in line with its lowered, more justified rarity. Additionally, 1.3 also brought the [[DiscOneNuke Arkhalis]], which has a 1/10 chance to spawn in place of a real Enchanted Sword, seemingly bringing the entire Enchanted Sword category out of infamy for good. On the other hand, Journey's End nerfed slightly the Enchanted Sword itself to give it a slightly lower damage and knockback, and higher use time, so it's likely debatable if it'll be that useful or not.
** {{Exaggerated|Trope}} with the Slime Staff. It has the lowest drop rate of any enemy-dropped item: only a 1 in 10,000 chance, and even [[MetalSlime Pinky]] only has a ''1% chance'' to drop it, the highest out of all Slime enemies. This makes it potentially the rarest of any of the summon weapons, on top of being the ''weakest'' with a mere 8 damage and no ranged ability. However, combining this weapon with the Greedy Ring's effects[[note]]causing enemies to drop money when hit and spawn more coins on death than usual[[/note]] and a specially-structured arena can turn it into a very profitable cash cow that nets dozens--if not hundreds--of gold coins in a few minutes, so it's not completely valueless.
** Downplayed with the Coin Gun. It's the rarest drop in a pirate invasion, having a 0.25% chance to drop from the Flying Dutchman Ship (Meaning one in every ''400'' ships has one), a 0.05% chance to drop from Captains, and a 0.0125% chance to drop from anything else. It has a very high damage stat, but you need coins to use it. It has a power of 200... When using platinum coins. Unless you have a good money farm, it's very hard to get this weapon to its peak damage.

** "Baleful Harvest" and "Ice Scream". Both achievements require you to reach the 15th wave of the [[ThatOneBoss Pumpkin Moon and Frost Moon]]. Getting to the 15th wave is easier said than done, with its fair share of increasingly [[DemonicSpiders dangerous enemies and bosses]] that are capable of incapacitating and [[ZergRush Zerg Rushing]] players easily without some ''crazy'' preparation and/or skill, LuckBasedMission being in effect for each wave, and lastly requiring you to do all of this before ''dawn arrives.'' To make matters even more worse, the whole night is nine real minutes long. [[SarcasmMode Have fun.]]

** The Wall of Flesh often feels like this. by reading the guide pages, you might think it's a horrible abomination which requires teams of players to defeat, and yet even if you don't prepare for it, as long as you have decent armor, you're completely overprepared.