Default Deck. Hard. Under 1 hour. I'm pretty happy with that!
Also, had a run right before it where I made 2 mistakes and lost the run, so hard does feel punishing when you make mistakes, but very winnable. I didn't feel like I got the most insane synergies for the run, either... just had to step up and handle it well.
A highlight for me was in the final fight, with the chain forcing specific casting locations and a hand where I didn't draw any immune cards, and I managed to get all 6 of my spells cast without the staff needing to trigger.