The Gangplank icon will take me a minimum 15 games to complete
At least with my current trend of only getting one level 3 upgrade per game.
I'm either only managing to get one per game (and BARELY getting a second upgrade) because you're so fed that the team just surrenders. Or another game I had where we all did so poorly I couldn't even afford one level 3 upgrade.
Actually, my first game of this mode, I got two level 3 upgrades, but of course, you have to WIN 2 BEFORE you can start earning progress for your krakens. Don't get me started on how stupid it is to have to win and not get progress towards part 2 yet.
I want to say that I enjoy this game mode, but after playing it, it's just too stressful to worry about 'can I manage a second level 3 upgrade before the game ends?' I basically feel forced to turtle and get as many dragons and enemy jungle creeps as possible, instead of just ending the game.