For 100/2, you could try atarimesan's guide: https://www.youtube.com/watch?v=9EHa1TjTJmU

As for the dragon 70/6 map, you could try these:
http://www.nicovideo.jp/watch/sm29019200
http://www.nicovideo.jp/watch/sm29020365
http://www.nicovideo.jp/watch/sm29037864