Here is the full list of all 24 12 Labours of Hercules XIII: Wonder-ful Builder achievements.
Activate 3 any boost boxes at the same time
Complete 5 levels in Gold time
Remove 4 obstacles using the 'Work Faster!' bonus
Use the same bonus again before its time runs out
Find 5 puzzle pieces
Activate 2 boosts of the same type together
Workers must collect one resource after all the objectives are met
Stop the clock with a bonus after completing a level
Finish level in Expert Mode and Gold Time having 3 seconds left
Complete four bonus levels in Gold time
Remove 30 interactive objects (sheep, bushes etc.)
Activate the 'Run Faster!' bonus with a complete Hermes' Obelisk
Beat a Developer's Record 3 times
Beat a Developer's Record 20 times
Collect resources 100 times or more from respawn points
Earn every achievement
Complete all levels in Gold time
Leave an untouched bonus box
Complete 20 levels in Gold time
Use 2 different bonuses together
Activate bonus and boost of the same type together
Call upon 3 different characters simultaneously
Complete a level in Gold time without using any bonuses
Build 3 obelisks on a single level