I got to level 100, did not think I would. I do 1 or 2 NMD every now and again just to level the glyphs. Sometimes I invite randoms who are near the door to make it less boring. I will have the odd game until all the glyphs I use are done, have 3 left at level 18. Sometimes I have to quite a NMD(level 53) as one NPC is so powerful I cannot even damage it, don’t know if this is a bug but its annoying.