Just killed ecthar as part of the exotic sword quest...
So I've just killed ecthar in the asylum as part of the quest, and now I need relic crystals.. Apparently they're found in relic iron but after finding loads, nothing is coming up. Don't suppose anyone has any ideas?
Edit: I've now managed to do it after hours of grinding.. I went onto the dark beyond mission to grind the (in this case) void kills. I've also attached a video showing how to kill Ecthar if you're at that stage.
I understand that there are apparently other ways to get into the asylum. One of which is using one super to kill all 3 knights.. This isn't true as from seen in the video i didn't use one super. Another rumour is that you just need to kill them really fast. This could be true as I did kill them fast! So by all means try it without using solar, ark and void and see what happens :)
Use the zone trick. Makes it faster. Find a relic thats on the edge of a zone. Open it fly out of the zone and back in and taaadaaaa. You can open it again. If nobody is in the zone you can do this till the end of time.