Forge achievement
Fully improve the blacksmiths' work area.
UPDATE: With the addition of the Basins, you now only need to make 9 of the 12 upgrades (Tools, Forge, Anvial, Basin, 3 levels each) to get this achievement.
Reward: Improvement
You can buy 250 token blacksmith's baby dragon (+Learning/Innovation/Cooperation for blacksmith)
Forge achievement reward
Forge achievement reward is the Blacksmith's baby dragon improvement.
Fully upgraded blacksmith workshop - Forge achievement - Mahogany flooring