There are 30 achievements tracked for notdNetHack in the Junethack tournament.
ascended
entered Astral Plane
entered Elemental Planes
obtained the Amulet of Yendor
performed the Invocation Ritual
obtained the Book of the Dead
obtained the Candelabrum of Invocation
entered Gehennom
defeated Medusa
obtained the Bell of Opening
obtained the luckstone from the Mines
obtained the Sokoban Prize
escaped in celestial disgrace
Kroo's Bling (Acquire the dismal swamp completion prize)
Punishing Poplars (Acquire the black forest completion prize)
Snowplow (Acquire the ice caves completion prize)
Gillywhatnow (Acquire the archipelago completion prize)
Aameul & Hethradiah (Summon demogorgon with the forbidden ritual)
An Unknown Ritual (Perform the ritual of an unknown god)
Angry Librarian (Kill Illurien of the Myriad Glimpses)
Duo of Pain (Acquire both the silver key and the cage key)
Asmodown (Kill Asmodeus)
Demogorgone (Kill Demogorgon)
One Key (Acquire an alignment key)
Three Keys (Acquire three alignment keys)
Anarcho-Alchemist (Make every unique alchemy kit potion in a single game)
If The Shoe Fits... (Pay for an armorsmith service)
Not Pulling Punches (Land a punch with all 4 offensive mystic powers active)
Garnet Rod (Land a hit with a garnet tipped spear)
Chernobyl (Cast a spell 150% overloaded or higher)