I lost in street fighter by getting low kicked to death.
I tell my opponent
you _________ed me (to death)
I beat a difficult boss in a video game by exploiting a glitch.
I beat UberBoss by __________ing him.
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Though unofficial (and bad?) English perhaps an idea from Urban Dictionary would work. As mentioned in comments a 'official' dictionary may be tricky to find for something so new!
glitching The act of exploiting glitches, errors, mistakes, or a bug in a system for harmless fun or devious mischief.
Glitching can also mean that a system, such as a computer, is experiencing many glitches and technical problems at once.
He has been at the bank glitching that ATM machine all night...
You may consider using the words "trick" or "deceive" in an appropriate form. The words are applicable in any context, including video games.
trick: cunningly deceive or outwit.
A word I might is gyp
Informal: Sometimes Offensive. To defraud or rob by some sharp practice; swindle; cheat.