So, it's been a few days, and normally I would keep quiet about something like this and not revive the thread, but I really feel compelled to share this. I'm really proud!
I beat Tsukuyomi solo with Silence Echo turned on. c:
Boop #1.
Boop #2.
Edit: The images are links because they're huge. I hope that's okay?
I died two or three times. It was heartbreaking. But that's why the timer is like eee.
The 9:50 at the end is because the timer changed after duty completion. It didn't take me 40 seconds to DPS 23% of her health. It took 6 minutes.
It was my first clear, and I wasn't expecting to actually clear it, so no video right now.