As I said during our labs - make the grid much less visible. As it is now, the text is extremely unreadable.
It took me a while to find the start. Careful with the arrows, why is the end and start the only place where the arrow points to the text and not to the object? Since you mostly have these texts right next to the object I wouldn't use arrows at all since it's obvious what the text is connected to. The only exception would maybe be the enemies.
There is a lot of dead ends. Maybe consider adding some sort of reward into them. Since it's called Ellen's Trip, maybe she can find something there, collect stuff, or even just give the player some comments/insights.
Other than this, good job :)