Why rate my game 2 stars saying you tried all the choices and couldn't get any of the true endings? When 1, you know there are 2 special endings, and 2, you watched a video seeing those endings which is essentially a walk through to get to them?
The middle goblin path is a dead end. You need to take the left path or the right path for the true endings. Both paths have secondary dead ends once you are in the castle, but they also have unique art and story.