**SPOILERS BELOW**
Decided to replay this game as I consider it one of the best idlers ever made. Soo much strategy and variation.
Somehow I never realized that you don't have to beat each dungeon in one go (if you die halfway through the monsters you can re-enter with 50% already completed). Finding this out made things a lot quicker.
I've been working around the no saves issue by opening a copy of the game in a second tab before making any big decisions. If something doesn't work out (i.e. barely fail a dungeon and lose all my accumulated equipment), I can just go back to the original tab.
The "multiple tabs" approach does make things funky with equipment, however. I'll have ~20 shield/weapon, open a copy in a second tab, and the equipment immediately jumps to ~90 shield/weapon. Saves time, so I'm not complaining.
I was really hoping that beating this game would show the password to Idling Through Loops, since that page is password protected, but sadly not. I loved that game as well. Bummer :(