Ditto to what Mc_ProYT said. Regarding glowstone, its just a bad texture to use.
Also, doesnt it say somewhere that Dungeon 8 is the last dungeon and that no other dungeons would be added?
I thought I saw that as well. It must have been removed.
Another dungeon parkour wouldn't hurt, but I think we need some more unique levels.
The size of the map is very good.
But there are some block choices I wouldn't have gone with. You used allot of chiseled stone bricks for the floor. Chiseled stone brick should only be used in small doses to add detail.
There is allot of glowstone as well. Which isn't a very apples sing block, nor does it work well with all the stone. And lighting may have been a problem, but there are ways to get around that (night vision)
And in the last few rooms you used polished granite. It doesn't complement all of the stone around it. It just looks completely out of place since this wasn't a reoccurring block in all of the other dungeon parkours.
And the last room is way too big. It doesn't feel like a dungeon parkour. Yes, there are some big rooms in d 1-7, but they are detailed!
The reoccurring theme in d 1-7 is tunnels! You mainly run through tunnels with vines and lava, they occasionally cross over or lead into a larger (detailed) room. I'm afraid I'm just not seeing enough of that here.
So I'm sorry to say, but this map has been declined.