Here is the full list of all 40 Colonial Conquest achievements.
Conquer all the Earth with Germany
Hold a treasury of above £1,000,000,000
Conquer all the Earth with Russia
Get of above 100,000 Armies with Russia
As any player, subvert Germany
Conquer all the Earth with the Unted States
As any player, control Libya, Egypt, Sudan, Horn of Africa, Arabia and Mongolia.
Own all the game regions that are NOT adjacent to the seas.
As the US, conquer Arabia, Venezuela, Cuba, Persia and Korea
Control Uruguay, Argentina, Brazil, England, all of France, all of Germany, Spain, Italy
Hold at the same time US West Coast (Calfornia), all of France, South Africa, Italy, Chile, Austria-Hungary and New Zealand
As any player, control Eastern USA, England, Arabia, Malaya, Southern Germany and Honshu
Hold all of Arabia, Ottoman Empire, Persia, Egypt, Libya, Tunisia, Algeria, Morroco and Spain
Conquer Venezuela, Southern USA, Arabia, Ottoman Empire, Persia, Kamerun, Central Russia and Rumania.
As any player, control Morroco, Siam, Colombia, Mexico, Jamaica and Afghanistan
As the US player, conquer England
As the Russian player, conquer all of continental Europe
Hold all of Africa
As the US player, invade all of Japan
As any player, control Western USA, Honshu, Sweden and Quebec
Own a region in each of the game's Theater
Unite Victoria's family by holding or conquering England, Scotland, North Germany, Southern Germany, Eastern Germany, Norway and Iceland
Hold all of South America
As any player, lose all territories but Southern USA (Texas!)
As the Japanese player, conquer North and South Germany
Use all of your 20 movement orders in the same turn.
As the Japanese player, conquer all of China
As any player, control in one turn Colombia,Brazil and West Africa
As a German player, conquer the Eastern USA
As any player, control all regions of Scandinavia, Iceland Canada, Australia and New Zealand
Take a province without suffering a single loss.
Conquer all of eastern American coast with Britain (Quebec, Eastern USA)
As the US player, conquer Kenya
Play at least 3 games
Play at least 5 multiplayer games
As the German player, conquer the Low Countries on the first turn of the game
Have Dominated Earth with each and every nation
Conquer all the Earth with Great Britain
Conquer all the Earth with France
Conquer all the Earth with Japan