Here is the full list of all 36 Empire of Ember achievements.
Retrieved Kroth's Ember
Beat the game on easy
Beat the game on impossible
Beat the game on Hard
Kill 5 enemies or more under one cast of Berzerk
Have level 3 versions (the highest level) of all the primary gameplay buildings in your city
Win a map against a downloaded city
Earn 50,000 gold in a single game
Beat the game without taking damage
Beat the tutorial without taking damage
Rescue all the villagers when a village asks you to save lost men from a dungeon
Win the game in hardcore mode
Reach player level 20
Break 1000 objects in a single game
Beat the game on normal
Use the raise dead spell to affect 5 or more units at once
Kill 20 enemies in the first mission where you defend your city against the goblin attackers
Beat the entire game solo, never purchasing units. If the game give you units through quests that is OK
Beat one of the suicide missions, electing to not take any units with you.
Rescue all the villagers when a village asks you to save prisoners
Kill an enemy instantly by impaling them with a spike trap
Get the highest rank in a mission (by killing enemies quickly)
Have any attribute reach a value of 40, including equipment bonuses
Get any pair of matched rings, and equip them at the same time
Place a decoration or decorative building in build mode
Win the game, making only negative karma decisions
Win the game, making only positive karma decisions
Rescue all the villagers when a village asks you to save a caravan
Do 100 points of damage with a single attack with one of your primary weapons
Unlocked a dungeon using ancient weapon fragments
Beat the archery tournament
Beat the magic tournament
Beat the melee tournament
Marry the elf princess
Marry the mage princess
Marry the ghost princess