Europa Universalis IV
373 Achievements
200+h
GOG
Dude, Where's my Boat?
Capture 20 boats with the Boarding Naval Doctrine.
0.6%
How to unlock the Dude, Where's my Boat? achievement in Europa Universalis IV - Definitive Guide
Crouching Puma
TrueSteamAchievements
TrueSteamAchievements
Easily achieved as England (and presumably other early naval powers). Take the doctrine as soon as possible and actively hunt enemy fleets while at war. I got the achievement in a single war with France.