This is a quick make Printable Version of Achilles Helmet from Halo 5. The originall Pepakura modeler SavedbyGraceG12 on 405th.com
Here is the link: https://www.405th.com/forums/resources/halo-5-guardians-mjolnir-gen2-achilles.151/
Nothing new here, Just made a clean helmet more detailed and printable on a 3d printer.
It is currently sized for a 24" head so Scale accordingly if you need to change the size. Enjoy.