Writhing Demon's Soul - Demon's Souls Guide - IGN

Writhing Demon's Soul is a boss soul dropped by the Leechmonger. Leechmonger can be encountered in the first zone of the Valley of Defilement Archstone

Stonefang Tunnel Walkthrough - Demon's Souls Guide - IGN

Valley of Defilement Walkthrough - Demon's Souls Guide - IGN

Demon's Souls [Walkthroughs] - IGN

Demon's Souls [Walkthroughs] - IGN

Valley of Defilement Walkthrough - Demon's Souls Guide - IGN

Stonefang Tunnel Walkthrough - Demon's Souls Guide - IGN

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Walkthrough Demons Souls Wiki

Stonefang Tunnel Walkthrough - Demon's Souls Guide - IGN