These are very handy; although, my methods differ slightly on each one. For example, during the white phase of Oryx both the extra DPSer and the runner should be on top of the Deathsinger platforms. They don't need to jump between them; they can just run in circles. Having them up there is both safer for them and everyone else because the knight will attack them but be unable to get good hits because their attacks hit the walls of the platforms.