Beat the Bully is the first boss mission which you are given in Castaway 2.
It is given to you by the first Sigil by completing the first two crafting missions.
Big Blue the Meanie is the first boss in the game.
Show Big Blue a thing or two about picking on things his own size. Defeat him and use the Blood of Crius to open the Gate of Crius. From there, continue on your journey until you reach the town of Astraea's Bastion
Kill 1 Big Blue the Meanie
5x Ninja Stars