Well, we've had some teething problems with the scoring of this contest because the Heroes 5 "scoring" system isn't as sophisticated as I'd hoped. I have decided to use the following formula to determine total score:

Score = T + (.25T x D)
T = time (total days)
D = difficulty (Heroic 1, Hard 2 etc.)

Lowest score is best. So basically you're penalised 25% for each difficulty level you play below heroic. Sorry for the somewhat ad hoc solution, it's the best I could think of. Due to this change and the relatively low number of entrants so far, I'll extend the first map another week so get your screenshots in! Full details of the contest can be found on the contest page.