After failure after failure I finally got this achievement.Using the River Method, Here's How:
Customise your deck. Make Sure Stranger in Shadows, River, Lionel, Maiden, Treasure Chest, Noble Trader etc are included. Remove any combat, or cards which offer no gold or equipment. You want to get as much gold and rings as possible before getting to the River.
Now Go to the Equipment and include all of the rings you possess making sure ring of exchange, ring of engorging are included.
As my deck was stacked with gain cards I had amassed over £200 and 8 rings by the time I hit the river card. At this point, I found the nearest Shop and sold my armour, swords etc I bought some food but spent most of my gold on items. Hitting Failure Cards on the River will quickly deplete your food and gold supplies, 1 card can remove 10 food or 50% of your gold but inventory items are never removed giving you a reserve to sell if you become desperate.
IT IS ESSENTIAL TO SELL ARMOUR -if using the river method as this changes the draw to 3 Success cards to 1 Failure. I did not find this out until very late in the process. This makes things very easy.
Everytime your food runs out head back to the shop, and this is where the ring of exchange and engorging become essential, If you sell a $12 ring the ring of exchange will give you 6 food, the ring of engorging would then double this number. Don't sell more than 1 item at a time. Again 1 failure card can decimate your resources.
Its Essential to Keep a tally - you have to be precise because your food and supplies are exhaustible. You will need at least 24 food and thats not including failures. Customising your deck, keeping a tally and selling your armour are the most important tips.(The reason I replaced all the armour with rings is that I also got the 10 Ring Achievement on this run)
Stranger In Shadows,Treasure Chest, Sunken Treasure, also provide opportunities to get the Success up.