History YMMV / LegendOfGrimrock

* SugarWiki/AwesomeMusic: [[https://www.youtube.com/watch?v=d689QT0nEY4 The main theme]], composed by the Finnish musician Jarno Sarkula, is the only real music track in the game barring the intro and credits. And it's awesome.

** Dungeon Runner, which requires you to complete the first level in under 4 minutes. While this is a challenging feat even when you've memorized the layout of the area, what the game doesn't tell you is that the countdown begins ''at the beginning of party creation'', meaning that most miss out on the achievement before even starting the game.

* ComplacentGamingSyndrome: For second game the most people recommend to take at least one Alchemist. Not only they make surprisingly good casters due to their decent energy growth, but they have unique skill in that herbs multiply in their inventory as long as they have at least one. This includes extremely rare Crystal Flowers, which can be turned into status buffs.

* {{Narm}}: [[spoiler: The Undying One -- the final boss of the game, the very reason Grimrock was built, the terrifying immortal being that the Goromorgs imprisoned for the destruction it wrought...is a giant, talking ''cube''.]]

** Try getting "Seeker of Secrets" ([[ExactlyWhatItSaysOnTheTin find every secret in the game]]) without a guide at your own peril, lest you miss something several floors up and need to backtrack.

** Level 3 in itself is a very notorious level for the abundance of spiders.

** The entirety of Crystal Mines in ''II''. They also have Giant Spiders with their poison, and there are also Xeleroids - eyeball with wings-like enemies that can inflict paralysis, but Eyctopuses - giant flying squids - really take the cake, as they have ability to [[CameraScrew blacken your whole screen with ink for some time]], so have fun flailing around at monsters completely blind while 3/4 of your group is also poisoned. The mines also have one giant chasm in the middle without guard rails, so it is very easy to fall to lower levels and get hurt, especially when blinded. And while the design of mines is nice, the black rock everywhere makes harder to see around you and spot enemies before they jump on you. Thankfully, the dungeon has at least interesting puzzles.

** Level 9 contains some sequences where you can loop indefinitely. For example, towards the Temple Grounds you'll turned around in a mirrory MindScrew manner. And then there is the passage of columns which seems and ''will'' go on forever if you don't know how exactly you have to traverse it (there is a scroll with the hint earlier in the level).

** The entirety of Crystal Mines in ''II''. They also have Giant Spiders with their poison, and there are also Xeleroids - bat-like enemies that can inflict paralysis, but Eyctopuses - giant flying squids - really take the cake, as they have ability to [[CameraScrew blacken your whole screen with ink for some time]], so have fun flailing around at monsters completely blind while 3/4 of your group is also poisoned. The mines also have one giant chasm in the middle without guard rails, so it is very easy to fall to lower levels and get hurt, especially when blinded. And while the design of mines is nice, the black rock everywhere makes harder to see around you and spot enemies before they jump on you. Thankfully, the dungeon has at least interesting puzzles.

** You can rest wherever you want, but if any monster sniffs you out you'll get a pretty nasty wake-up call in a form of JumpScare with monster apparently trying its best to make it look like [[TheFourthWallWillNotProtectYou it's crawling all over the screen]]. The best way to rest is to drop a grate in secluded room before, but even then, waking up from sleep and finding there is a monster waiting for you on the other side of grate the wasn't there before isn't the most ideal morning sight ...

* ComplacentGamingSyndrome: For second game the most people recommend to take at least one Alchemist. Not only make surprisingly good casters, but they have unique skill in that herbs multiply in their inventory as long as they have at least one. This includes extremely rare Crystal Flowers, which can be turned into status buffs.

** The entirety of Crystal Mines in ''II''. They also have Giant Spiders with their poison, but there are also Xeleroids - bat-like enemies that can inflict paralysis, but Eyctopuses - giant flying squids - really take the cake, as they have ability to [[CameraScrew blacken your whole screen with ink for some time]], so have fun flailing around at monsters completely blind while 3/4 of your group is also poisoned. The mines also have one giant chasm in the middle without guard rails, so it is very easy to fall to lower levels and get hurt, especially when blinded. And while the design of mines is nice, the black rock everywhere makes harder to see around you and spot enemies before they jump on you.

*** Fire Elementals. They have little health, but that is the only saving grace. Once they notice you, they dart towards your party in a [[SuicideAttack suicidal charge]] that damages whole group for quite bit of health and of course they give no experience if they go out this way. Your only chance is to take them down with ranged attack or spell becfore they reach you, but of course they rarely show up alone.

* ThatOneLevel: While all the levels are pretty hard, one secret dungeon on Level 3 has attained a level of notoriety for being filled with Slimes, high-health, low-experience monsters that spread disease to your party members and can attack through bars. It isn't even needed to attempt this dungeon unless one wants a [[spoiler:crossbow]] and [[spoiler:one of seven optional hidden treasures, collected for a measly achievement]], but it's borderline impossible if attempted right when the player is at Level 3. Later in the game, the player obtains a map to access this dungeon, if they didn't find it already.

** The normal-sized Herders are trivial to deal with, but small and large Herders are a very different story. Small Herders have a powerful ranged poison bolt attack (and often travel in pairs on lower levels), making them dangerous despite their low health. Large Herders have a deadly poison cloud attack they can fire from any direction, making ranged combat a necessity to whittle away at their high health.
** On Level 9, Ice Lizards. And they respawn.
** [[GiantEnemyCrab Giant Crabs]] are pretty vicious when you first encounter them at Level 5. They attack quickly (often delivering two strikes at once), have high health and defense, and are maneuverable (they usually walk sideways as a crab would, making them nearly impossible to backstab). They become more manageable in Normal mode after you level up some more; not so in Hard mode.
** Level 10 features Goromorgs, lethal forcefield wizards that you fight in groups.
** In the sequel, the 'swarm' type enemies such as the insects in Keelbreach Bog are EXTREMELY fast in both movement ''and'' attack speed, have high evasion, can only be hit during a certain part of their animations, and hit ''quite'' hard, especially on the roughest Difficulty.
** Frogs in 'II'. They take quite a few hits before going down, can jump above you to attack you from behind, especially your most likely more fragile members in back row, ''and can steal your weapons from your hands''. Thankfully you can recover those once you kill them, but fighting them barehanded isn't exactly the best prospect.
** Sabre-toothed Wargs in ''II'' are extremely fast and powerful, and will also howl to boost their movement speed & attract their fellows to maim you ''en masse''. A large pack of them roams the Hamlet of Stormbreach (alongside the forest Ogre already prowling the map!), presenting a serious challenge to players exploring the level for the first time.

* SugarWiki/MostWonderfulSound: The jingle that plays when you discover a secret.

*** [[spoiler:The second game has similar puzzle but ''worse'' - on bigger grid, requiring you to switch 4 levers instead of a single button, and instead of teleporters there are trapdoors that will send you to the lower level, so you either need to trek back or reload.]]
** Level 6 puzzle that nets you second best sword in the game, which is prerequisite to enter Fighter's Challenge. It will take you some time to figure entire sequence out and on top each step is timed and for some steps the limit is very tight, so you have to move around quickly, something that rigid controls don't help.

* GoddamnedBats: Shrakk Torr, A.K.A the annoying fly showing on lower levels of the first game. Relatively weak and dies in a couple of hits, but is annoyingly fast and it can inflict disease, and can get really troublesome if it appears along Ice Lizards and Goromorgs.

*** [[spoiler:The second game has similar puzzle but ''worse'' - on bigger grid, requiring you to switch 4 lever instead of a single button, and instead of teleporters there are trapdoors that will send you to the lower level, so you either need to trek back or reload.]]

** You can rest wherever you want, but if any monster sniffs you out you'll get a pretty nasty wake-up call in a form of JumpScare with monster apparently trying its best to make it look like [[TheFourthWallWillNotProtectYou it's crawling all over the screen]]. The best way to rest is to drop a grate in secluded room before, but even then, waking up from sleep and finding there is a monster waiting for you on the other side of grate isn't the most ideal morning sight ...

*** Ice Lizards. They start appearing in part of Level 9 after opening doors with really ominous messages in a dimly lit labyrinth. They have an annoying habit to spring on you from unexpected side, sometimes in packs. At least now you know how protagonists in ''Film/JurrasicPark'' felt when hunted by Velociraptors, which Ice Lizard kinda resembles.

* BreatherBoss: The Wormbound brothers in the sequel are not very hard, considering that Wormbound Catacombs is intended to be one of the last areas you gain access to.

** The "white blobs" iron door puzzle on Level 7 isn't tough to figure out, but getting the keyboard movements right can be. There's even an achievement for completing it.

** Level 6 leaves you trapped in a large, open, poorly-lit expanse with a lone ogre lurking somewhere, nearby or far away. You'll feel the wet breath on your back till you finally bring yourself to seek it out and kill it (which you don't ''have'' to do, but...well, decide if obtaining a [[spoiler: Tome of Fire, which gives your Mage 3 fire skill points and +10 Resist Fire]] is worth hunting it down, as it carries the gold key).

* SelfImposedChallenge: There is an ''Old School Mode,'' wherein the player doesn't have the luxury of the automap. The sequel goes further, giving you the option to make all save crystals single-use should you feel so inclined.
* SoloCharacterRun: Forced in [[spoiler:Toorum]] mode, but available in regular playthroughs as well.