I saw this set in the Item List FAQ over at GameFAQs, and was wondering where it is obtained. I s it found in a fixed location (or locations), or are the drops random? Thanks in advance!

In a game like this it's all random. Like Torchlight. Suites of stuff that may or may not give an advantage over an unmatched set. It adds 'Depth' to inventory management. By the way, your stash is in the campaign screen menu.