Note: This isn't a perfect playthourgh. I die many times and I do occasionally forget what to do or where to go. I did cut the pointless deaths (i.e. no gems collected), but there are still several deaths on screen. I will show how to retrieve every gem as well as both endings.
Here it is. The "Good" Ending when you collect all the gems and complete World 8. That's all, folks. Hope you enjoyed it and that maybe I inspired a few people to play.