A guide to Crimson Guardian killing

When I first started there I stood on the right top platform and sniped them with Hurricane. They never come past the stairs so you're perfectly safe there. The guardian on the far right is stuck right above the stairs but the ones on the left eventually walk over so you can kill them all in time.

Now that I can kill them much faster though, I actually stand on the top of the middle staircase and turn left and right killing them. (Makes me feel like Legolas defending Helm's Deep lol)