Imperator has 72 different achievements, all using the Steam achievements mechanics. Achievements have no in-game effects; the achievement just pops up in-game and then added to the player's Steam profile. It is possible to see the achievements sorted by the percentage of users that managed to complete each achievement by going to the game's global achievements at Steam (for more accurate numbers one can use the Steam web API).
The difficulty of each achievement varies; some achievements are very easy (e.g. befriending two other rulers), while some are more difficult (e.g. control all spice production as Mosylon). The below list groups the various achievements by a difficulty level as assessed by the wiki editors (uncategorized - UC - achievements haven't been assessed yet).
Achievements can only be gained in single-player ironman games started in the grand-campaign. They can be earned while playing older versions of the game as long as the given achievement was present in that version.
It is not possible to gain achievements if the checksum has been changed - either by tampering with game files, using mods altering gameplay mechanics (graphical mods do not affect checksum), or if the game installation has been corrupted. NOTE that running the game in debug mode changes the checksum, rendering achievements impossible.
Several achievements contain Easter eggs.
Steam achievements may not unlock instantly upon fulfilling their requirements. Reloading the save file or repeatedly opening and closing the Steam overlay as well as the achievements tab may eventually trigger them.
List of achievements
The "Notes" column lists helpful short tips/strategies.
The "Ver" column indicates in which version a certain achievement was added. Achievements cannot be earned prior to the version they were added in.
The "DI" column is for difficulty as assessed by wiki editors. VE = Very Easy, E = Easy, M = Medium, H = Hard, VH = Very Hard, UC = Uncategorized.
|Government is tribal|| Government is tribal
|Have an appointed Dictator refuse to give up power.||1.0||VE|
| Government is a republic
|Research 40 Inventions||1.0||VE|
| Current ruler:
|Compete in the Olympic Games on at least 10 occasions.||This achievement seems bugged, can be earned only by sending the first character in the list.||1.0||VE|
|Has annexed any territories from another country.||1.0||VE|
|During a succession crisis, sent a disloyal pretender away to be a Mercenary.||1.0||VE|
|Capital is importing:||Easy to do starting as Macedon, all strategic resources can be imported from your allies and the capital starts with 5 import routes.||1.0||VE|
|Government is Tribal|| Government is Tribal
|Playing as either:||Playing as Macedon
The following Provinces are completely owned:
|Has a territory with city status and at least 100 Civilization Level||1.0||E|
|Culture group is Iberian or Celt-Iberian||Formed 20px Greater Iberia||1.0||E|
|Any Character that handles Martial Advances:||1.0||E|
|Playing as Carthage|| The following regions are completely owned by Carthage or one of its subjects:
|Playing as Antigonid Kingdom||Sack the cities of Babylon, Alexandria, Lysimacheia and Pella||1.0||E|
|Playing as Rome|| owns the following cities:
|Government is tribal||As a tribe, enact the decision to become a Republic.||1.0||E|
|Survive a Civil War.||1.0||E|
|Playing or started as Rome|| Has at least one territory with city status and at least 70 civilization value in the following provinces:
|Religion is not monotheistic|| Pantheon:
|Has built a Great Wonder||Heirs of Alexander||2.0||E|
|Playing as Thrace||Kill the ruler of the Antigonid Kingdom through the Poetic Justice task of the Crossing the Hellespont Thracian national mission tree||Heirs of Alexander||2.0||E|
|Playing as Antigonid Kingdom||Has enacted the Secure Antigonid Position decision||2.0||E|
| Own a legion with at least 10 distinctions
||Heirs of Alexander||2.0||E|
|Playing as Rome|| Owns Carthage (3256)
Has sacked Carthage (3256) through the Conquest of Carthage event
|Own Byzantion (1453)||1.0||M|
|Desecrate Holy Sites for at least 10 different religions.||For the purposes of this achievement, a holy site's religion is the dominant religion of its territory, not the religion of its deity. Both the unit ability and the action in the Holy Sites tab of the religion menu count.||1.0||M|
|Government is an Empire||1.0||M|
|Religion is Megalithic||Religion is Megalithic||The two independent tribal Megalithic nations are Mauretania, a Local Power, and Massaesylia, a Regional Power that is stronger but with fewer alliance options. Southern Spain has most of the necessary stone.
The main difficulty is to preserve your territory from Carthaginian ambitions. Ally with Iberian nations, conquer the other Megalithic tribe and attack Carthage while they are engaged in an other war. Take enough territory from the Carthaginian proper (not their client states) to reduce Carthage to Regional power status, then maintain an alliance with them.
A much easier way to accomplish this achievement is to start as Carthage and then switch religions to Megalithic. As Carthage, if you ally with the Etruscans and declare war on Rome as right as soon as you can fabricate a claim on them (immediately after the start of the game), you can annex them. Without Rome you can conquer all of Europe at your leisure without any sort of real checks to your power.
|Culture Group is Egyptian or Meroitic|| Has formed Egypt
The following Provinces are completely owned:
|Has Greater or Equal to 9000 Population||1.0||M|
|Playing as a Republic|| Playing as a Republic
|Playing as Epirus||Owns Roma (1)||1.0||M|
|| Owns the cities of:
|Playing as Boi|| Playing as Boi
|Culture is Gallic, Pannonian, or Belgae||Formed Gaul||While the achievement is available for Pannonian culture group countries, only Gallic or Belgae culture group countries can actually form Gaul.||1.0||M|
|| Formed 20px Persia
|Playing as either:|| Owns all inhabitable territories in the following regions:
|Culture is Gallic, Pannonian, or Belgae|| Date is < 480.1.1
|Religion is Jewish|| Owns the cities of:
||As this achievement is basically a continuation of the Kingdom Of David achievement, see the notes of the latter for strategies.||1.4||M|
||Has destroyed 10 Great Wonders||Ancient wonders does not count. Can only done by destroying Great Works built by AI. Quite hard because AI doesn't build that much Great Works. Use Imperial Challenge CB to instantly grab a territory with a great work and destroy it.||Heirs of Alexander||2.0||M|
|Culture Group is Hellenistic||Owns Omboi (577) and Alexandreia (516)||The Pharos Lighthouse does not count as a tower for this achievement.||Heirs of Alexander||2.0||M|
|Playing as Seleukid Empire||Owns Pella (379)||2.0||M|
|Playing as Armenia||Owns a territory with at least 15 fort level||2.0||M|
|Started as Kios||Formed Pontus||This achievement is bugged, as it will show itself locked, i.e. not achievable, when starting as Kios. Reloading the save after forming Pontus should award the achievement.||2.0||M|
|Culture Group is Anatolian|| Owns or have subjects that own all of the following regions:
|Playing as Maurya|| Religion is Buddhist
The following regions are completely owned:
||Can still earn this achievement after forming 20px Bharatvarsha||1.0||H|
|Any owned territory produces more than 10 Fish||1.0||H|
|Culture Group is Germanic|| Culture Group is Germanic
|Playing as Rome||Own every territory adjacent to the Mediterranean Sea||1.0||H|
|Playing as Megalopolis|| Owns Megalopolis (436)
|Playing as Sparta|| Owns Persepolis (4799)
|Playing as either:||Reformed the Hellenistic Empire||1.0||H|
|Owns all colonized territories.||1.0||H|
|Playing as Bactria|| Is not a subject
|Culture is Vandal|| Owns a territory in any of the following regions:
||Start as Lugia or Sciria, quickly expand to your home region and convert culture in non-vandalic provinces. Send a migratory unit to settle in north Africa. Moves pops around your provinces in order to be able to migrate from as much provinces as possible. Begin the mass migration creating two or three big migratory armies and move them to the province of Latium in Italy. Raze or pillage a couple of cities, this will lead you in a war with Rome. Siege the province of Rome.||1.0||H|
|Playing as Athens|| Date is < 500.1.1
owns the cities of:
|Playing as Sparta|| Date is < 480.1.1
|Playing as either:|| Agathocles (56) is alive
||Ally with Rome, and join their wars whenever they ask (you do not have to actually fight in these wars most of the time). Conquer the four city states on the western end of Sicily without calling Rome - you will need to be patient with this as they likely outnumber your levy. Switch your military law to increase the size of your levy. Once you have conquered these city states, wait a while to recover manpower, and join Rome's wars wherever you can. Keep an eye on when Rome will join a war against Carthage - you may need to improve relations with them. When you declare on Carthage, make sure you have troops off the coast of Malta so you can siege it down. The Romans should be able to handle any Carthaginians that land on Sicily, so rush to take the forts, then peace out for Carthage's land (including Malta), and the two Carthaginian vassals' land, then form the Kingdom of Sicily.||1.4||H|
|Playing as Massilia|| Date is < 550.1.1
|Playing as either:||Owns Uppakra (6000)||Heirs of Alexander||2.0||H|
| Culture Group is Hellenistic
||At least one of the following countries exists and is a subject of the current country:||2.0||H|
|Playing as Cappadocia||Culture is Macedonian||2.0||H|
|Playing as Egypt|| Owns or have subjects that own all of the following territories:
|Playing as Heraclea Pontica||Formed Persia, whilst the ruler belongs to the Achaemenid dynasty.||Despite the description, it is not actually necessary to have the Achaemenids as the ruling dynasty for the achievement||1.0||VH|
|Religion is Jewish|| Religion is Jewish
Own the regions of:
|Despite what the description says, it´s not actually necessary to start as a jewish nation to gain this achievement, so an easy way of doing it is playing as either one of Egypt, Seleukid Empire or Antigonid Kingdom, using Legacy Of Alexander CB to conquer the others, then conquer the areas needed from the other minor nations and then converting into the jewish religion. Doing it this way will also award you the Holy Pilgrim Achievement.||1.0||VH|
|| Date is < 500.1.1
|Start with Brigantia as it is strongest pop-wise. Immediately strengthen centralization by changing laws. Forming Pritania will help. When you get foothold in ireland integrate Hibernian culture to use them to colonize unoccupied land there.||1.0||VH|
| Not playing as Maurya
|| owns the cities of:
||Ironically this achievement can be done after forming 20px Bharatvarsha as Maurya.
It can also be done by any non-Indian religion nations, if the nation converts to one of the religions required. So a valid strategy is for example; starting as the Seleukid Empire, getting Memphis and Athenai during the Diadochi Wars, then conquering Pataliputra and converting to any Indian religion.
|Playing as Mosylon||Own every Spice producing territory in the world||1.0||VH|
|Culture is Phoenician||Formed Phoenicia||1.0||VH|
| Has built a Great Wonder in all of the following territories:
||Does not have to complete the great work.||Heirs of Alexander||2.0||VH|