It said to participate 3 times before to complete the quest, but we did it once and we got it complete already ._.
Is it meant to be like that or am i missing something?
Nvm we figured it out but incase others got confused too.
There are 2 objectives.
Either kill Archdemon 3 times (Where you don't get the loot spawn on your ship, usually happens when you're more than 6 players), or be on the ship that gets the loot spawned on for holding the kill chest for 10 minutes.
Thanks!