Modding the nightmare difficulity

[doom3007]

I've been searching in Data0.pak (In atom).

I would like to disable the restriction of using deveolper weapons in nightmare mode.

I can't find in the Data0.pak anything regarding the developer weapons being restricted to the Nightemare difficulity, but it is.

 

Any one can help me?

Where can I change that?

I already modded a bit of the Data0 and I beleive that's what left for me, I can't see it.

 

TL;DR:

Where can I change that in nightmare difficulity I will be able to use developer weapons?

 

Also, is it possible to mod both me and a partner's dying light game that we could trade DRoPs?

 

Thanks, doom.