I hate to be that guy but, I give this demo map a 1
This isn't setup nicely at all

1. I understand the pressure plates but no one time press lock system, makes enemys spawn continuesly

2. Zombie pigmen don't aggro instantly so theres just things to press the skele spawner plates and number 1 comes into play

3. No real instructions other than play with latest snapshot, it seem to became night quickly and the unlit areas kept spawning mobs cause of number 1 yet again

4. What rpg? You named a couple of items and thats it, an rpg even a demo has some type of content. Even a simple lore would have been nice

5. I've never seen anything as linear as this dungeon, even if it expands nothing says "I made this in an hour" like 2x1 hallways

6. No food, maybe that was intentional in the design or not but with the continues mobs from evil pressure plates it gets annoying(With lack of instruction I decided to play on normal)

7. Why do we have to use the latest snapshot? The summon command was in 1.7.2 and thats all you use

8. You can take this as I wanted an even number with these complaints, no boss fight at the end. Would have been cool to fight like a zombie commander with 100 hearts a diamond sword and a 100% chance of spawning zombies each hit but eh thats being nit picky

Things I did like:
The tower parkour was nice, not that hard but a good way to break-up the constant combat against the constantly spawning mobs

So to sum up(Or just read this if you dont wanna read the whole thing)
-Fix spawners
-Add context or rpg like element
-Less combat, its not an arena
-Add instructions/ auto setup
-give way of restoring hearts/ food
-give reason why to use latest snapshot
-Bossfight! -jk

I give it a 5


It isn´t really good but it´s also not the worst dungeon i´ve seen so far.

1. I like the room with the lava 
   
2. The room where you have to jump is to dark when you play on Brightness: Moody
   
3. The design of the dugneon is monotonous.*
   
4. Maybe you should add some command block mechanisms to you map. Using cmd. blocks just to summon mobs appears unprofessional*
   

* Maybe it helps you if you take a look at my ice dungeon from my upcoming adventuremap; 1 | 2 
Oh and; Try to use this sound (/playsound portal.travel @p ~ ~ ~ 0.75 2.0) somewhere in your map. It sounds pretty cool i think.

Also, the next one will be out in a few days, it will be titled: [For Testing] Royal Library of a Fallen Kingdom

Keep in mind that if this gets included in my RPG there will be a story behind why you are going there and what you will obtain from the chest at the end.
If you don't like it, please tell me ways i could improve it.