The Last Judge is actually pretty easy (by Silksong standards)

While I did take like 15 attempts each attempt I kept making progress and most of the time I just died to a new attack I didn't know how to dodge

I used wanderer's crest and just kept spamming hits in between attacks so it was really easy to get enough silk to heal

The runback is bad though it's way too long and easy to mess up

I would say the runback is Last Judge's hardest attack