You'll also want to walk along the path from the depleted ore mine to where it splits off to go left and up to High Hall, or right and down to the harbour. Aside from the opponents to clear, there is a travelling merchant along that path who you can only meet once, so make sure you have 52k+ worth of loot if you want the malachite gem he has, his gold and possible equipment (I reloaded and on the third try got an upgrade for my belt and bracelet as well as a couple pieces of equipment just for their enchantment formula).
You can fly up to the High Hall anti-dragon shield, as well, transform, and just have to walk the last part of the path. You can get over part of the harbour shield, transform and fall down close to the harbour, or transform over the mountain just west of the edge of the shield, and then jump down to the top of the building there.