Talk:Gangplank/@comment-33536623-20150806065525/@comment-25306139-20150806163126

If you've played Gangplank during a matchmade game anywhere during the Bilgewater event, you should get the skin. So if you've played with the reworked Gangplank in a matchmade game you should be fine (matchmade games include coop vs ai, any game mode that uses the matchmaking system to match you with other players).

http://na.leagueoflegends.com/en/news/game-updates/special-event/gangplank-returns-and-event-end-draws-near