13-Apr-2012, 8:52 AM
I think a super hard level should have some difficult overall puzzle that incorporates several elements from various areas on the map. So it's not just about skillfully not dying in ten different rooms, or knowing what to do as soon as you open the level in an editor. So I suggest some complicated monster interaction in some area that there are no monsters in to begin with. Also, I don't think I've ever seen a difficult level without any blocks, so get creative with how those can be used and reused in several areas. One last tip: release it within a year of starting to work on it, so the rest of us don't have to wait too long for it :-)