Ok I didn't know Amber could do that I'll try it for sure! The fastest silver rune farm I know of is Jora since her fight is quick and she comes right back out of her cave ready to fight again.
Donate at church. 5k gets 1 week 25% temp boost. Go Nightmare+ and cripple last foe so you can heal/recharge. Gold runes cripple combat capacity too much. Rest as little as possible to drag out your investment. Happy Hunting.
