This product is amazing and beyond the pale. It takes the random generation mechanic from AD&D Ravenloft and pumps it up to 11. I cannot too highly recommend this product, as it is vivid, deep, and replayable. A few more stats here and there would have been helpful, but in the age of Google finding a pregen 4th level fighter is no great hardship.
Furthermore, generating the town of Dunnsmouth is the most fun I've had prepping a game in literally decades. Dice are rolled on a paper. The dice become your Dunnsmouth, with each number having a meaning and significance for the town.
Get this, read it, and run it.