Hey mate, how can this be used with minimal effort to enable a third weapon (eq. to Mule Kick)?

So I've seen a few mods that incorporate bo1 perks into WaW maps, and I'm wondering if one could find a way with simply inserting some (or all) of those perks into Der Riese? I am mainly interseted in playing vanilla Der Riese + Mule Kick. No other alterations. Some mods add these things, ...

Heya, using this now! Looking for classic WaW engine on Der Riese, but with at *least* Muel Kick from bo1. Ideally, interested in most/all perks from bo1. Also interested in maybe modding a few guns around - would you have any tips on getting started learning to mod that?