Why do you kill other mobs? is it necessary?

Nop, you can do it another way, but that way we need to wait a little before start attacking him, otherwise we will kill it too fast and he will get invencibility buff, and you will have to kill the kraken in the other room. So instead of standing there doing nothing we rather kill the mobs =D

sure it is but always is better a pt. 5/5 BID4 dies more quickly

no one tell me why spawn more mini kraken than your video.... xD

Luck? because in my case in many opportunities spawns 10-20 octopus in other opportunities spawns 4-6 only

Grats.