The quest to defeat Sweeper Stu is called "Two Peaks" which you can find in Highland Falls 3, Room 2. After you complete the quest the Mysterious Little Girl quotes Twin Peaks: "Through the darkness of futures past, the magician longs to see. One chants out between two worlds, Fire Walk With Me." with the word "Fire" replaced by word "thermal"
Pramin is a trade name for metoclopramide, an antiemetic and gastroprokinetic agent commonly used to treat nausea and vomiting, to facilitate gastric emptying in people with gastroparesis, and as a treatment for the gastric stasis often associated with migraine headaches. Pramin image could be inspired to form of tablets and/or to aromatic bound of one of its chemical components
Snake Oil Salesmen were traveling men who sold miraculous remedies whose ingredients were usually secret, unidentified, or mischaracterized and mostly inert or ineffective. To increase sales, an accomplice in the crowd would often attest to the value of the product in an effort to provoke buying enthusiasm. The "doctor" would leave town before his customers realized they had been cheated.
Mossbow may be a pun inspired by the rapper Bow Wow, which real name is Shad Gregory Moss
Dragoon was a term denoting light cavalry units in armies of 17th-18th centuries, sadly famous for being used by Louis XIV to persecute Protestants
Zweihander means "Two hander" in German and is a two-handed sword primarily of the Renaissance. It is a true two-handed sword because it requires two hands to wield it
The Sardaukar are a fictional fanatical army from Frank Herbert's Dune universe, primarily featured in the 1965 science fiction novel, Dune
A plague doctor was a medieval physician who saw poxies, often without real medical knownings. Some of them wore a variety of strange garments. The protective suit consisted of a heavy fabric overcoat that was waxed, a mask with glass eye openings and a cone nose shaped like a beak to hold scented substances and straw. The masks were designed to protect them from putrid air, the cause of infection according to the old miasmatic theory. A wooden cane pointer was used to help examine the patient without having to touch them
Monacle may be a reference to the webcomic Penny Arcade.