In Caves of Qud, there are a total of 52 achievements awarded for completing certain tasks. Of these 52, 20 are hidden, meaning that neither the requirements for completion nor the achievement's icon are displayed until after the player has completed them. These hidden achievements are displayed further down, in a separate section from the non-hidden achievements.
Through some method, gain a reputation of +600 or more with one of the in-game Factions.
This can generally be achieved most easily by becoming loved by the player's starting village, as you can water-ritual with the Mayor, the town's Warden, and the town's Questgiver.
From there, you must either kill creatures disliked by the village, perform a Water Ritual with creatures liked by the village, or use Schrodinger pages from the Annals of Qud to increase your reputation further.
Another easy-to-please faction is Mechanimists, just toss enough artifacts in the sacred well at the Six Day Stilt. For example 8-9 laser rifles which are relatively easy to gather/tinker, but give a respectable +75 reputation per offering.
Thus, if you have it, it is a good idea to use Precognition (or a sphynxsalt injector, if you are True Kin) before activating your timecube, so that you can earn the achievement and still have a timecube to cast into the sacred well.
If you have it, it is a good idea to use Precognition (or a sphynxsalt injector, if you are True Kin) before offering to the well so that you can gain the achievement and still keep your artifact.
Become the host of 3 different types of fungal infection.
This can be easily achieved by walking near three differently colored broodpuffs. Make sure that one fungal infection has grown before walking near the next broodpuff, as itchy skin does not stack and walking into more spores will not change the infection type.
Killing Svenlainard, Trophy Hunter is, for obvious reasons, an expedient. He is not affiliated with the Village of Kyakukya, so you do not need to worry about others joining in the fight unless you have area of effect moves. However, dominating him and forcing him to drop his swords also works.
Perform the water ritual with a legendary frog, and request that it teach you a skill. (Legendary frogs teach Jump.)
This is a very rare achievement, mostly due to the relatively low chance that you will come across a legendary frog lair and have enough reputation for them to teach you Jump. ice frog lairs are generally located in the Jungle biome.
Mouse control is required for this achievement, as looking through keyboard commands means the cursor will always start to centered on yourself, making you fall in love with yourself before you have a chance to look at a sign. Turn on mouse controls, apply love injector, and right click a sign to look at it.
Somewhat difficult to attain, due to the rarity of Newly sentient beings. Reputation is mostly achieved from Schrodinger pages and water ritualing creatures that are loved by newly sentient being and killing creatures hated by them.
Proselytize or beguile a sludge, and dump 3 different liquids on it. Then wail on the helpless thing. It must be a Trisludge: any more and it will not count.
Make a habit of performing the water ritual with all the NPCs in your starting village after beginning a new game and this should not be too difficult to complete.
The easiest way is to take Space-Time Vortex at character creation and use it at every opportunity. This is an aggregate number so it can be done across playthroughs.
In addition, you can be decapitated by a decarbonizer's decarbonize effect, an axe-wielding dervish, or by an Evil Twin if you know decapitate or are wielding a relic that has a chance to decapitate. If you only have one head, losing it will kill you.
When finding a book in the world, make a habit of choosing to read it before putting it in your inventory. You need only look at the first page of a book for it to count as read.
When finding a book in the world, make a habit of choosing to read it before putting it in your inventory. You need only look at the first page of a book for it to count as read.
Note that Ironshank must actually be contracted. Using honey or yuckwheatstems to stave off the disease after getting the "Your legs ache at the joints" message will not count.
Note that Ironshank must actually be contracted in order to be cured. Staving off the disease using honey or yuckwheatstems will prevent you from contracting the disease and thus prevent you from curing it.
Randomly generated thermoelectriccells occasionally contain some lava inside, which is usually easiest way to get it without spelunking 30 stratas deep to kill a redjell or getting lucky with an ichor merchant. Then just drink that good juice. Note: this usually deals enough damage to kill you instantly.
Note that Glotrot must actually be contracted. Using honey or yuckwheatstems to stave off the disease after getting the "Your throat feels sore" message will not count.
Cure Glotrot using the method described in the CorpusCholiys.
Note that Glotrot must actually be contracted to be cured. Staving off the disease using honey or yuckwheatstems will prevent you from contracting the disease and thus prevent you from curing it. This also counts for the Synolymb achievement.
Easily done if entering Golgotha blind. For a dedicated build for this, take precognition and wings, fly to Golgotha, and precog until you find the shaft with "scratched vents" and wait.
Finding credits to install them all is the hardest part. However, they can be farmed by scouring the deserts for Putus Templar parties. After completing, Tomb of the Eaters will also increase the player's license by 8.
Get dismembered (voluntarily or not), and eat your raw dismembered limb or other body part. Cooking with your dismembered body part as an ingredient does not count towards this achievement.