This is a Sub-Zero mask from Mortal Combat X designed mainly for 3d printing. 1,8 M polys. The renders are made with Octane and C4D, that file is also attached. Optimised for 3d printing, you have to only support the bottom part, tilting the object a bit may makes it easier to print ((see images)).
The nose part isn't closed and there's enough place to put some led light in. The is a small area on both sides formed for the ears. Also there is a part formed for the strap.