There are three parts to Bellum
In the first part Bellum will be in a room with 3 floors When he is floating in the pool wack his eye with your sword as many times as you can When he is zooming around in circles get an hour glass ball and click on it when he is close to the ground and near you When time freezes wack his eye many times Before time runs out run out of the way or he will hit you Then Bellum will go up a floor and his tentacles will spread out Go to that floor and shoot the eyes with his arrow Whn he is in the pool and grows purple things grab them with your grappling hook Do this until the next scene appears

On the second part you are chasing the ghost ship It starts to grow eyes Shoot them with your cannon as fast as possible When things are shot at you shoot them with your cannon Do this until the next scene appears

Bellum has taken over Line back At first run towards him and he will capture Ciela On the top screen she would have a picture of the eye on his back Hit the Knight until he draws back Ciela will give you an hourglass ball Grab it When the eye on his back opens click on the Hour glass ball and time will freeze
Hit his open eye as many times as possible Do this until The end of the boss Bellum