I have miles of knowledge of the quest system. I don't care to take the time to put together a list of tags, but I might make a few how-to videos once modding is officially open. I learned most of what I know by trial and error and reading the XML of all current quests. A cool way to start learning is to take a finished ingame quest and duplicate it. Then change the outcomes of each choice after the introduction. When it is complete it will use already ingame assets, but you now have some larger quest variety. 

The basic idea is that there are quest objectives starting at 0, which is the introduction. Each objective can have a reward, encounter (fight), choice, or condition to meet. You can have any number of objectives, so there is no limit to how long a quest is. The units you add for encounters need to be in the CoreMonsterTypes.xml file. Knowing that, you should be able to do some cool stuff while learning what everything does. If you have questions post them here and the local know-it-alls will answer them. 

Good Luck!

Hello seanw3,
I have read of your knowledge on quests, and other aspects of the editing on the game, and I wanted to ask if you can help me on some issues.

1) I am trying to create a quest or a GoodieHut it is only available for a specific race. In order to place into play specific champions.
2) Is it possible to create on game starts one or more champions, or support units that can then be updated when you find new weapons or armor.
3) Is possible to create a random quest through (for example a spell) that has an effect on the map?

I ran several tests, and I got several hits, but I could not solve the following problems:

a ) An summoned units remains as such in as it came into play.
b ) I was able to make a GoodieHunt (specific not random) and place it at run-time (not on game start), but not a quest.
c ) In GoddieHunt I was not been able to establish a proper chance of meetings and rewards.

Thanks for any help you can provide.
P.S.
Naturally the discussion is open, anyone with tips can post them freely.

a ) exactly, a  summoned hero or unit is not capable of increasing level. In addition, a hero summoned can not be equipped in the store.

b ) Gee thanks, I must have missed, I will try to implement it.

c ) Ok, I thought it was my fault not having understood anything

Thanks for the tips

a) Not exactly sure without seeing your xml file, but I would guess that you have forgotten some tags that make heroes heroes. Try taking a specific hero from CoreUnits.xml and using it for the quest. Look over the tags there that are different from the normal units.

seanw3 I have a little problem,
I created this quest, but it behaves strangely.
First, as the description puts it "I opened the cell B and i found ..."
the second does not provide me options cells A - M so I could take to reward the champion that I have chosen.

Now it's a little late, "3:30 am" has more sense in that way:

Thanks for the tip, I will give surely a glance

thanks for any help or suggestions

this is the file:

http://www.mediafire.com/?s60i769cb1uj0mu

Labyrinth quest .... 11.5 Mb .... My God!     

After having studied I will need a ...

Maybe as you say "unfinished" but it is light years from what I have created.  

however the first stupid thing I've done with your quest led to an unexpected result, "I think ... 

I have not read everything that you put in the xml file" . 

In the spell created to put the quest on the map I wrote for error:

<Unitclass> QuestLoc_Labyrinth </ Unitclass>

instead of:

<Unitclass> Quest_ToO_Labyrinth_001 </ Unitclass>

This leads to spam a random quest.  

Now I should probably set all the flag "repeatable" to 1.