Duergar

h duergar
Difficulty	6
Attacks	Weapon 2d4, Weapon 2d4

h duergar
Difficulty	6
Attacks	Weapon 2d4, Weapon 2d4
Base level	4
Base experience	51
Speed	6
Base AC	10
Base MR	10
Alignment	5 (lawful)
Frequency (by normal means)	1 (Very rare)
Genocidable	Yes
Weight	900
Nutritional value	300
Size	Medium
Resistances	None
Resistances conveyed	None
A duergar: can tunnel through walls. needs a pick-axe to tunnel through walls. has a head, a couple of arms, and a torso. does not eat. (*) is a dwarf. is male. is strong. likes gold. likes gems. can pick up weapons and food. appears only in Gehennom. hits creatures as a +1 weapon.
Reference	SLASH'EM_0.0.7E7F2/monst.c#line799

The duergar is a monster added in SLASH'EM. It is basically a dwarf lord that is generated only in Gehennom. As such, it is not very threatening or interesting, not for a character that can reach Gehennom.