Well, I have finished. No loss, impossible, mage. Day 18. 93 Quests completed.
Hardest fight in the game was definitely Scrounger. Partially due to Blood Shamans simply casting one of their abilities even when feared... which is some weird bug I've never seen before. Ultimately Magic Shackles did her in. It was surprising how hard to kill her Trackers were if they could get their summon out.
Also, I feel like the Battle with Baal was ALSO bugged. I recall before when he summoned troops, he would always fill the ring directly adjacent to him with troops. In my fight, there were noticeable gaps that let me keep hitting him. It was really weird.
I used the Phoenix trick to keep hitting him at 2x speed, and took him down decently fast using the solo stack of Bone Dragons (35). Got close when one of his Archdemon stacks was finally large enough to Halve my stack, had to throw a timeback into the mix there to survive. Baal finally died to a poison skull
.
18 Days was clearly worse than I could have done. I didn't really truly think about a fast run until about day 11, and even then made obvious mistakes (Gah, you have to go back to Elon after going to Reha
.)