I've gone absolutely insane on this easter egg. I have watched so many guides on Youtube and In all of them boss fight most pull you to his throne and trigger a cutscene after the fourth time you shoot the red blood pods and he fell on the ground. but he doesn't do that. he combines all of his attacks and goes on for a fifth phase. in this stage he uses the sun insta kill from stage 2. the buble shields from stage 3 and the fire from stage 4( this time without pulling you to himself) I don't know what I'm doing wrong. all of this just makes this stage painful to complete.