Here is the full list of all 16 Hammerting achievements.
Win the game by completing the 'Righteous Affluence' victory condition.
Win the game by completing the 'World Conquest' victory condition.
Have at least 40 dwarves living in the Mountainhome.
Craft a 'Star of Mara' gemstone.
Construct at least 500 lengths of track for elevators or railroad.
Produce 5 units of 'Dwarven Licorice'.
Hold a Hammerting
Build 1 'Foundry', 1 'Quarry', 1 'Smithy', and 1 'Great Hall'.
Harvest one of each type of crop.
Produce 5000 metal ingots of any kind.
Destroy one of each type of monster lair.
Discover 1 'Jackpot Mine', 1 'Ancient Dwarven Mound', and 1 'Sacred Well'.
Acquire the Knowledge of 'Myth of the Hoard'.
Slay 100 'Skeletons' and shut down 5 'Abandoned Graveyards'.
Construct 7 of each type of Drill.
Have exactly 7 male dwarves, and 1 female dwarf, living in the Mountainhome.