The challenge wasn't all that hard. For my project, you have to move a ghoul with the arrow keys, while two bats glide above. There were three videos that helped me during my project; one on how to move a sprite with the arrow keys, one on how to include sound, and one on how to change the costumes of the sprites automatically. I got a bit stuck on the arrow keys, but I re-watched the video and figured out how to fix my mistake. But, everything else was easy to do.