Crusader Kings II / Achievements
01Let's go out into the Field
Defeat a sibling in a war using the rival casus belli.
- Unlocked by
- 1.4%
- Rarity
- Very rare
- Hidden achievement
- No
Data from Steam — Steam Web API Terms of Use. Last updated .
Crusader Kings II / Achievements
Defeat a sibling in a war using the rival casus belli.
Data from Steam — Steam Web API Terms of Use. Last updated .