Hellfire and Brimstone Achievement Guide

Hellfire and Brimstone is an achievement that can be completed in the Brandfire Reformatory, which is a delve in the Deadlands. To complete this achievement you should head through the delve, at the back end you will find a door. This door leads to the Reformatory Keep. Inside there you can find the four stones. Once you activate those stones, and NPC will appear that has some unique dialogue. Once you have activated all four stones the achievement should complete.
Location of all Lectern Stones in the Brandfire Reformatory

A Lectern Stone in the Brandfire Reformatory