Based on this post: http://stuffershack.com/class-based-thoughts-on-different-types-of-dwarves/

I created a new class of Dwarves in my World of Elthos on the Mythos Machine yesterday.

Dwarven Rogue
Female Name Dwarven Rogue
Class Parts Thief Fighter SpellChanter
Race Gen Dice 1d6
Min Strength 5
Min Wisdom 5
Min Dexterity 4
Experience Base 50 -- Recommended Exp Base: 50
SLP Per Level 3
Description
Dwarven Rogues are specialists in skills that require deftness and subtly. They are often the spies of the Dwarven world, but also serve other functions as well, such as engineering and testing. They get a special set of unique Skills.
Is Private
Is Hidden Check to Hide this Class from Players.

Skills (exclusive to Dwarven Rogue):

Ceiling Climbing
Weak Point Knowledge
Disable Device

The whole process of creating the class in the Mythos Machine took 4 minutes. Not bad. It's now available to players who play Dwarven characters. :)