Ooh that’s fantastic to hear. My favourite part of STS is having 999 block and body slamming the boss.
Also here’s some unsolicited advice for you from a routine A20 enjoyer, watch Baalorlord on YouTube if you have the time! Watching someone else go through their rationale for picking/not picking a card, choosing between events, etc drastically improved my sts runs.
P. S. play clad I find him a lot less punishing to deal with.
Interesting that it appears harder, perhaps the slightly different format kinda forces you to relearn certain strategies? My partner and I both love sts so it definitely looks like a good buy