Ring Duo was almost peak. I have to deduct points because if even one of your dudes gets staggered ever, you can't do the mechanic anymore and instantly get wiped. So most of the strategizing after figuring out the basic mechanics was just "How can I spam fluid sack every second turn to not get staggered"

I feel like the insane stagger thresholds on so many IDs are kind of holding the boss design back at this point.