Europa Universalis IV
373 Achievements
200+h
GOG
Combined Arms
Have both an Admiral and a General with a trait.
2.5%
How to unlock the Combined Arms achievement in Europa Universalis IV - Definitive Guide
The Biodreamer
TrueSteamAchievements
TrueSteamAchievements
Have a general and admiral fight in a war and this are a quite certain outcome after a few battles. So you probably get this in the first war against a non land locked nation.