In the Evernight Abyss (Elven DLC area), three chests sit directly behind the entry portal. Loot them for ~400 gold, exit the portal, and immediately return to respawn the chests.
Essential support units. They are the only minions that can swim and resurrect fallen comrades, though they are very weak in direct combat. Campaign Strategy & The "Abysses"
If the game fails to launch, try running Config.exe as an administrator or setting the compatibility mode for Overlord.exe to Windows 7 in the installation folder.
Resources like Gold and Life Force (the "currency" used to spawn minions) are vital for upgrading your and gear.
Once a hero is defeated in the base game, an Abyss Portal opens in their respective realm. These are challenging endgame dungeons where you must banish the former rulers to their personal hells.
For more exhaustive step-by-step level guides, you can refer to the comprehensive GameFAQs Walkthrough or visual 100% Path of Evil Longplays on YouTube. Guide :: Farming: An Overlordly way to gather Resources
