Second mission in this event that didn't complete upon fulfilling the requirements...
First mission of the event "win a matchmade game" and now 5/6 "play as gangplank and use your ult 3 times." This is pathetic riot, you can't even code simple missions anymore? I used that ult more than twice the required amount AND won. There isn't even progress shown on the towers killed as a team alternative completion requirements. [zombie-brand-facepalm]
Edit: Actually "Pool Party Pals" completes upon pvp win as well so that's 3!