I had a friend who has meshmixer and he couldn’t open it, he also tried blender and freecad. The base helmet file that is. I havent’t had time to check all the files yet.
Edit: Checked and I can open all the files exept the helmet base file.
I printed at test of the forearm in PLA at 50% and it looks more wierd (to me anyway) in the slicer than finished print. It was a bit stuck at the wrist but that could be "cracked open" and it flexes just fine in order to get your hand trough. in theory that is as it was at 50%.
@ChrisThePropGuy look at the sideview of your files compaired to screenused and you’ll see your version is bit long ”in the neck” and the lower mouth has a different angle.
Maybe the back is a bit long/extended when looking at screenused. I mean from the ear and back looking at side view. Not on a PC som can’t upload a photo. Maybe others can help.
Nice work, slow ’n steady wins the race
I’d be tempted to round off the top of the left thigh though. I think it would better match the right, unless there are some angles of the photo making it look different.