Ladon the Lamia - Successfully complete the Greek campaign to unlock Ladon the Lamia for purchase.

Narfi - Successfully complete the Norse campaign to unlock Narfi, son of Loki, for purchase.

Setekh - Successfully complete the Egyptian campaign to unlock Setekh for purchase.

Achievements - Successfully complete the indicated task to unlock the corresponding achievement:

Asgardian: Create one of every Norse Myth unit.
Berserker: Successfully complete the Norse campaign missions on the Hard difficulty.
Blessed of Asgard: Win a multiplayer or skirmish game with each Norse core hero.
Blessed of Egypt: Win a multiplayer or skirmish game with each Egyptian core hero.
Blessed of Olympus: Win a multiplayer or skirmish game with each Greek core hero.
Cartographer: Win a four player game with the whole map explored.
Cryptozoologist: Create one of every Myth unit.
Demigod: Successfully complete the Greek campaign missions on the Hard difficulty.
Devout: Win then games by Temple control.
Don't Open the box!: Win or lose a game where Pandora's box appears but is not claimed.
Egyptian Conqueror: Successfully complete the Egyptian campaign.
Egyptologist: Create one of every Egyptian Myth unit.
Greek Conqueror: Successfully complete the Greek campaign.
Greek Studies: Create one of every Greek Myth unit.
Hero: Win five multiplayer Skirmish games with each culture.
High Priest: Use each Major and Minor god at least once in a multiplayer skirmish game.
High Warlord: Win a multiplayer or skirmish game with each core hero.
Huskari: Win five multiplayer Skirmish games as the Norse.
Khepesh: Win five multiplayer Skirmish games as the Egyptians.
Kingslayer: Kill an enemy hero three times in the same multiplayer or skirmish game.
Myrmidon: Win five multiplayer Skirmish games as the Greeks.
Norse Conqueror: Successfully complete the Norse campaign.
Opened the box: Win or lose a game while controlling Pandora's box.
Pacifist: Win a game without attacking any enemy units.
Pharaoh: Successfully complete the Egyptian campaign on the Hard difficulty.
Play 1 game on Wi-Fi: Pay one game in Wi-Fi mode.
Sacrificial Lamb: Attack an enemy unit or building with an Egyptian Villager or Greek Architect.
Spelunker: Successfully complete all Underworld scenarios.
Studious: Successfully complete the Tutorial campaign.
Tourist: Successfully complete all Egyptian scenarios.
Vacationer: Successfully complete all Greek scenarios.
Wanderer: Successfully complete all Norse scenarios.
Warlord: Win ten games by Conquest.