This DLC was a lot of fun because you are able to get to know the characters better and the history of the Town.
You have to basically run errands for Gerry - the main character of this DLC. You are about to figure out more about his past life. It also unlocks an expanded ending when activating the portal again. Do mind to save your game before activating the portal because I forgot and lost a good hour of gameplay...
You can open up a tavern and hold festivities for the town. I really liked this DLC but I wouldn't pay full price for it. The current discounted price of €1.95 is perfect.