I recommend looking at the debuff he gives you if he gives you the blue arrow debuff it means that he's not aggroed on to you and if you have the purple arrow debuff he is charging at you, second thing I recommend using the see through Fullscreen map especially for the second phase because you will be able to see where he is before he is on your screen and if you don't see properly through the map you can change the opacity of it, if you don't know how look at map controls
I recommend looking at the debuff he gives you if he gives you the blue arrow debuff it means that he's not aggroed on to you and if you have the purple arrow debuff he is charging at you, second thing I recommend using the see through Fullscreen map especially for the second phase because you will be able to see where he is before he is on your screen and if you don't see properly through the map you can change the opacity of it, if you don't know how look at map controls
Ok thanks for the tips man