I see nothing wrong with this. Why are people so quick to debate about a common sense strategy? Even at lvl 26 you can die easily from Hobgoblins and Minotaur (especially if they are majors). However on the Archon part it is IMHO unnecessary to snipe from the entrance ledge....but who am I to criticize someone who is actively fighting the boss. As long as you are doing damage that is all that matters.