The Royal Court achievement

Polyglot

Personally know 10 Languages

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 = polyglot_achievement_trigger
	num_of_known_languages >= 10
}

As written in game/common/achievements/ep1_achievements.txt.

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

exists = global_var:started_polyglot_achievement

As written in game/common/achievements/ep1_achievements.txt.

Source: game/common/achievements/ep1_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.