Promethean 45-100%
I have been on the grind on this level the last few weeks. I spent around 9k on this when it came out and managed to get 57-97 and some other runs. After coming back for it I wanted to at least finish that 57-100, which I could do in a few days and 3k new attempts, on March 18th. After that I started playing from 45 and now over 3 weeks, 6k attempts and dozens of last ship deaths later I finally got it.
I am trying my hardest to beat this level and I believe I can do it eventually. I have good motivation currently and 45-100 is definitely the harder half by far. Now I just need to get good at the first half and I have a shot.
18k attempts in, this is way, way harder than Bloodlust. Love this level too, never gets annoying for me although being like the most inconsistent and brutal challenge.