The Twilight map is very frustrating. I'm only able to complite the missions with high leveled warriors ( currently from Lv.70-89) and mostly playing with a friend. It's good as long as you have those Light Spirits with you, otherwise it'll become a nightmare. I can't say for sure which one is really harder. In Termina there are lots of difficult missions as well. Those Dark Lizalfos for example when there comes more and more when you "defeat" one and that when you have to defend the keeps. Those are hard to me. I can't do them without a friend. I though it'd be only logical if the Termina map were harder as it seems like the next one would be harder than the one before it. But I don't really know. What I can say for sure is neither of them isn't an easy task.

The rupee glitch, huh? Never hear of that before.