Here is the full list of all 23 12 Labours of Hercules VI: Race for Olympus achievements.
Collect 100 golds.
Remove 4 obstacles using the 'Work Faster!' bonus!
Use 2 different bonuses together.
Call upon 5 characters.
Use the same bonus again before its time runs out.
Find 5 puzzle pieces!
Complete 3 levels in Gold time.
Workers must collect one resource after all the objectives are met.
Call upon 3 different characters simultaneously.
Beat a Developer's Record!
Collect 100 resources of any kind with Demeter's Obelisk!
Finish level in Expert Mode and Gold Time having 3 seconds left!
Complete four bonus levels in Gold time!
Find 5 or more hidden objects on a single level!
Activate the 'Run Faster!' bonus with a complete Hermes' Obelisk!
Beat a Developer's Record 10 times!
Beat all Developer's Records!
Earn every achievement!
Complete all levels in Gold time!
Complete the super-bonus level in Gold time!
Complete 20 levels in Gold time!
Complete a level in Gold time without using any bonuses.
Build 3 obelisks on a single level.