Lo and Ber runes are easiest to build toward when you stop treating every activity as equal. Start with a character that can handle Torment XII without long pauses, then focus on content that rewards repeated clears. Prime Evil Echoes are a strong opening target, especially Baal in the hell version of Worldstone Keep. A fast single-target setup matters here. If your damage feels weak, spend time improving your gear through D4 items before committing to long farming sessions.

Choose the Right Boss for Your Goal

Baal can provide valuable rune drops and may also reward an Annihilus charm. Belial, found in the Sanctum of Lies, is more useful when you need Mythic equipment, Mythic Seals, or Sparks. Neither fight is worth repeating at a slow pace, though. You will quickly notice that a clean three-minute run is far better than a messy ten-minute attempt. Check your survival first, then tune your build around focused damage.

Make Each Undercity Run Count

The Kurast Undercity becomes much more useful with the right War Plans choices. Put points into Gutter Filth and Bauble Day before opening the portal. Activate every beacon as you move through the districts. Gutter Filth can call in a Portal Prankster, while Bauble Day lets the Cabochon Merchant appear after the district boss if that enemy was defeated. Keep this simple routine in mind.

Activate every beacon you pass.
Defeat each Portal Prankster that appears.
Finish the district boss without skipping side paths.
Visit the Cabochon Merchant before leaving.

Turn Common Offers into Progress

Do not burn through Forgotten Souls searching only for a direct Lo or Ber offer. Each inventory refresh costs 666 Forgotten Souls, so that approach can empty your reserves quickly. Buy Vex, Ohm, and Lo runes whenever they appear. Two Vex runes and a Flawless Emerald make one Ohm. Two Ohm runes with a Flawless Diamond make one Lo. Two Lo runes and a Grand Topaz produce one Ber. The process is slower than a lucky shop visit, but it gives every useful purchase a clear purpose.

Use Tributes and Fill the Gaps

Before entering the Undercity, apply a Tribute of Harmony and choose the Bargain for Invocation Runes. This changes the completion rewards and creates more opportunities for Vex and Ohm drops. Chronicle of Nightmare Sigils also deserves regular attention because its seasonal dungeons can supply extra runes and the gems needed for cube recipes. As a professional platform for buying game currency or items, U4GM offers a convenient option when you want to improve your setup with u4gm D4 items and return to farming with less downtime.