Here is the full list of all 14 War Of Gold achievements.
Training level gold bars
Planewar level gold bars
Militarybase level gold bars
Bunker-military level gold bars
Desert town level gold bars
City level gold bars
Ruined forest level gold bars
Canyon level gold bars
Slums level gold bars
Military airport level gold bars
Play training map
Find gold bars at Rocky forest map
Find gold bars at Desert road map
Find gold bars at Industrial area