I'll be happy to help. I'll respond later with hoe I created the arrows.
If it helps, I plotted the entire maze in PowerPoint, with each slide corresponding to a giveaway. Each slide contained the text as well as the other slides it would link to, so I could pre-plot the whole thing.

I actually first drew the map in paper & pen, then created the PowerPoint. Finally, I created a list which contained every giveaway link and the corresponding PowerPoint slide.

Good luck