Not being nasty but in a u.k. urban enviroment the chainsaw thing and the weapon thing aren’t practical for most people plus putting “Tiddles” to sleep with an M16 would be frowned on in my neighbourhood.
As to competency with weapons I have seen many amateurs who are convinced that they are expert weapon handlers when in fact they are borderline dangerous,it seems to be a bloke thing just as virtually all blokes think that they are great drivers and lovers.
I am very competent on 11 things out of the list ,all of them outdoorsy things which personally I wouldnt think very useful in every day life but am mostly crap for the domestic stuff that WOULD be useful in normal life.
I would include in the list ,giving a woman an orgasm, being able to hold your drink and being able to feign interest after two fucking hours of being dragged round womens clothing shops by the missus.