Base game achievement

Blood Eagle

Starting as any child of Ragnarr Loðbrók, conquer all of the British Isles

Conditions as the game checks them

Possible decides whether the achievement can still be earned in a run; happened is the check that unlocks it (common/achievements/_achievements.info).

Unlocks when (happened) (4 lines of game script)

custom_description = {
	text = blood_eagle_achievement_trigger
	completely_controls_region = world_europe_west_britannia
}

As written in game/common/achievements/standard_achievements.txt.

Still possible while (possible) (1 line of game script)

exists = global_var:started_blood_eagle_achievement

As written in game/common/achievements/standard_achievements.txt.

Source: game/common/achievements/standard_achievements.txt, game/common/achievement_groups.txt and the English localisation, Crusader Kings III 1.20.0.3. Unlock share: Steam Web API, 2026-10-02.