There is a post on the Steam forum that said using the potion unlocks a Steam achievement. Is that all it does? I thought you started with the Kickstarter items? Are you saying we have to find them in the game? I haven't played yet because I want to redeem my Kickstarter key on GOG since I also bought the physical Collectors Edition which comes with two Steam keys.
If you do have to find them and the potion does more than unlock an achievement, just say so, but don't tell me where or what they do (use spoiler tags if you must). If you do have to find them, how does that work in coop if one player has the Kickstarter items and the other one doesn't?
