options

so if a righteous human wants to murder unrighteous aliens 

then that righteous human needs to learn as much dark arts as possible 

in order to be able to lure out unrighteous aliens 

and that righteous human needs to cybernetically upgrade itself 

with exotic technology 

as much as possible 

in order to be able to control exotic technology 

to murder unrighteous aliens in another galaxy 

and/or in another dimension 

and/or in the future or in the past 

and/or possibly in another universe if there are other universes 

this is meant literally