Jim / Solo Offline / Very Hard / Nightmare / Infinity / Melee Only. Infinity is turned on so that pipes and poles can be used all throughout the scenarios. I found this challenge to be quite tough. Being Jim, I have to worry about his virus meter, so that's why herbs are used regularly. Nightmare multiplies damage by 2x, while making heals 75% effective for double the rank points. This run went just fine. Some silly parts where I get hurt, but that's expected in this level. If you ever doubted Jim's abilities, I think this video is a good indication of his capabilities..