必殺技: lethal technique

labor that requires strength / technique that requires strength (as in sports)

(especially in negatives to form phrases of praise) human feat

荒技: (martial arts) forceful move / 荒業: rough work

Calamity

a divine act / (figuratively) tasks that are beyond human capabilities

acrobatics

a lethal technique / a fighter's finishing move, ultimate technique, or coup de grâce, often in contexts such as pro wrestling or video games

An underhanded trick. / A lifehack.

skill / technique