One large problem with the “Birth of Darth Vader” scene is that he looks silly with the restraints on his wrists and he has awkward posture, you might just want to use a few shots from here: https://youtu.be/LK58iuqfdxg?t=2m40s

I think I’ll be using those shots even though it’s completely CGI. Darth Vader looks scarier here, I could cut back and forth between the Emperor, the walls being crushed and the video game footage to make a more convincing scene.

When it comes to Darth Vader breaking things, I’ve always thought something like this: https://vimeo.com/160550668 would work more. I have an in-depth description on the video to explain why I tried this. (Note: this is very rough, I did it in under a minute, it’s just a test)