Dark souls 3 has been for the most part been excellent on level design. Your objectives or where you need to go are usually clear as long as you're observant. Each area seems to be connected in a linear fashion but how you progress through the actual area can be different as there exist many paths to the same exit. There have only been a few areas in the game that are hard to reach as they're paths are either less obvious or hidden behind some convoluted mechanic. This can also be said about the quest lines. Some are easy while others are quite complex and very easy to mess up. This game won't hold your hand or spoon feed you on what to do. It expects a degree of intuition from the player. As for going the "wrong way" in souls games. There really isn't an issue in going off the beaten path. Souls games reward the player for exploration. You usually come across new items that will aid you in some fashion whether they be weapons, armor, or npc's. Lastly fret not over losing souls. Yes it's frustrating but the mechanic exists to give you a sense of dread in dying. Otherwise we are immortal characters that keep coming back. Souls will come and go and if you fear losing them chances are that fear will make it come true. We all end up farming souls anyways at one point or another. Enjoy the adrenaline rush of having close scrapes. Victory is all the much sweeter when there's something on the line to lose.