Yah, its a snuff video. Here's some more info you could divulge into: https://watchpeopledie.tv/h/beheading/post/357463/vietnamese-butcher-deep-web-decapitation-naked
Flash was a little too difficult for me to configure, but I was able to find something called pencil2D and probably spent a little too long tracing this into existence:
I could make background art, concept art etc.Maybe animation too if you can recommend an animation program that is free and incredibly simple to use. I've been out of the animation game for a long time so I might be a little rusty.