So... Yesterday made until Castrum's last boss, but we failed the timer, due to 4 wipes... In the end, I actually lost around 20k mettle overall by my own deaths and the wipes around the instance. I know, I know... But was my 1st run, still learning all of the mechanics.

Said that... My Rank is 11. Would be wiser to wait until rank 15 to try again, so the mettle losses wouldn't matter?