Alright, even if the setting is not completely defined yet, I think we also need to thing of mechanics.
How about distribute 1d4, 1d6, 1d8, 1d10, and 1d12 between Body, Move, Mind, Soul, and Luck?
Then the character gets a handful of character points to buy skills and maybe advantages/disadvantages? Skills would also range form 1d4 to 1d12.
Give starting equipment, gear granting 1d4 to 1d12 to certain actions?
When rolling, attempt to be a TN of 10 for average difficulty? the more you beat your TN by, the more it adds to "victory"? Characters then has the chance of trading a few points of "victory" to cancel a few points of "discovery" at a yet to decide ratio when rolling doubles/triples/quadruples? (so there is still possibility to cover your screw ups to some extent?)
Depending on the length of the campaign, it could last until you reach a certain amount of "victory", in which you win, or "discovery" where you lose...