I never got deep into StS, so it’s possible I don’t get what a good run looks like, but I’ve always felt like StS is about eking out a win by the skin of your teeth and careful choices - MT, by contrast, is more all or nothing. You’ll either wipe before you make it to the final boss or you’ll breeze through it without breaking a sweat.

MT is about building the most broken combos you can - it doesn’t always work out that way, but there’s nothing sweeter than taking down the final boss 3 turns early.

I highly recommend the expansion: the shards mechanic adds a really great push-your-luck mechanic. Originally I was wary of taking more than 10 or 20 shards over a run, because it makes each fight harder, some in some particularly frustrating ways, but a good infusion or the right upgrades on a card can make a failing run into a winner.