Farron Keep
Avoid the swamp portion of this area and stick to the area near the Farron Keep Perimeter bonfire and the area before the Abyss Watchers' boss arena. Ensure you have opened the shortcut connecting Crucifixion Woods and Farron Keep and eliminate the Ravenous Crystal Lizard. If you want, first obtain 2 Large Titanite Shards from the 2 Giants near the Cleansing Chapel bonfire or from the 2 Crystal Lizards in the area near the Stray Demon. Two Large Titanite Shards are enough to upgrade a weapon to +4.
Enemies in Farron Keep drop Titanite Shards, Poison Gems, and covenant items. The Ghru mages in front of the Abyss Watchers' arena drop Heavy Gems. The Ghrus drop Swordgrasses and the Dark Wraiths drop Pale Tongues. Each Ghru can be dealt with by using a Raw infused Broadsword+3. However, you might find it more effective to use a Raw infused Claymore+4 to fight each Ghru and each Dark Wraith. The most dangerous enemies in this route are the Lycanthropes, the Black Knight, and the Dark Wraiths.
Starting from the Halfway Fortress bonfire, jump down 2 cliffs and kill 3 Poisonhorn Bugs. Kill the Lycanthrope who is sitting, all nearby Poisonhorn Bugs, and another Lycanthrope. Next, fight the Black Knight, getting in one hit and then move or roll away. Proceed through the shortcut and kill all 3 nearby Ghrus. Run to the Abyss Watchers' boss arena, keeping to the right. When you see a Ghru mage sitting, kill it and stand near its location. Wait for the Dark Wraiths to kill all Ghrus on their way to the boss arena. The Dark Wraiths farm souls for you. Keep to the right path and proceed to the boss arena, killing the 2 Ghrus on your way. Finally, eliminate all enemies in front of the boss arena. The Dark Wraiths cannot enter the boss arena of the Abyss Watchers, making it easy to cheese the Dark Wraiths by luring them to the entrance of the boss room. In NG+0, while equipping the Silver Serpent Ring+0 and the Symbol of Avarice, each round earns you approximately 8,767 souls.
Farming souls: Farron Keep, Dark Souls III
Below are some data on the approximate amounts of souls you would obtain if you use the above route for soul farming in various NG cycles. The data were gathered while equipping the Silver Serpent Ring+3, Symbol of Avarice, and Shield of Want.
- NG+0: 13,404