Wow. I'm at a loss for words after seeing those photos you took. I personally think even Kaijuzoo would have a hard time repairing that for you.
The rubber is literally cracking up in mutliple places. Not just in one or two locations but all over the mask. And those large gashes or rips seem pretty horrible.
Hope you didn't spend too much on this. This mask must have looked magnificient when you first bought it. I can see that transluscent orange layer on the face.
I think this is a lost cause though overall. Too much damage. You'd have to replace sections of the rubber and seal a lot of those tiny tiny cracks too.