The Vosteed Thunderbird might be an option. It too really plays around with that tanto shape given the forward curve but it’s a great knife and comes in a couple different super steels: S35VN, M390, Elmax as far as I know. Of course, the price follows so that is probably a consideration.
Edit: Spyderco also released a Paramilitary 2 with a Tanto blade and M4 steel which is very tough. However, I think these are pretty hard to find.
The Spyderco is a very tough knife. They are a highly regarded manufacturer. I would very much cautious you against thinking you need a knife that can survive a nuclear blast.