I was stuck on Ironclad Ascension 12 for a while and finally beat it. I got Demon Power to start off so I built a deck to take advantage of strength. So awesome to drop the 5 attacks card with a cost of 1 when i have 15-20 strength, especially when they are vulnerable. I got the relic that prevents discarding your hand at the end of the turn, which let me set up many of my cards for the right moment.
I tend to let me decks get too large, but many times it is with 1 use exhaust cards, so it is just the first pass through the deck that takes a while. It isn’t unusual for me to have 20-25 cards at the end game even though most people seem to recommend much less than that.
I don’t break 1000 points often but I did it today, yippy ki ay!