Unofficial conduct

Unofficial conducts are conducts that are not tracked by the vanilla version of the game. They are enforced by the player themself only.

Celibate
Celibacy means not having sex. Having sex with an incubus or succubus may have positive effects such as gaining levels. Slash'EM officially tracks this conduct.

Nudist
Nudism means not wearing any armour throughout the game, except for the first turns during which you remove any starting armor.

Petless
The starting pet can be turned off from the options file.

Zen
The zen conduct is one of the most difficult conducts. It means wearing a blindfold through out the whole game. Only a handful of people are known to have ascended zen games and all of them have been zen samurai.

The difficulty in zen comes in that it is like a mixture of other conducts with additional twists to make it even harder. While blind, you may not read, though you may still use scrolls after you get the shopkeepers to name them to you (you only need to know those magic words). You cannot use altars to find the BUC status of an object because you do not see if the objects glow and what color. You also do not see how your objects look like by their material or color, so all potions are only shown as "a potion", wands as "a wand" and so on.

User Made Conducts
This is where users can post their own conducts. keep in mind, that you must give some description to the ways the conduct makes Nethack harder, as well as your own screen name and/or I.P. address.

Stubborn
Go through the entire game with your starting equipment. This is a difficult task, due to the fact that you cannot use any rings, amulets, weapons, spellbooks, ETC. other than the ones you started with. In fact, this is nearly impossible for the Tourist, due to the class's nature of buying items to start. This does not apply to food, or to quest artifacts that you earn through the quest. --Edrobot