Nero3D The Canuck Creator, show his homemade 3D printed Helldivers 2 Helmet based on files he bought online. You can do your own or you can buy ready made ones available online for cosplay use. As for airsoft use, you still need eye protection.
We're seeing airsoft players posting their Helldivers 2 game play videos online so it looks like it's the latest coop play that airsofters like. This usually leads to some putting together a Helldivers impression so to help them here is a comprehensive tutorial of making a Helldiver B-01 tactical armor by Galactic Armory.