I love this thread. OP gets 148 tops hats made of pure hugs.
There are so many ways to answer this question, depending on the game...
So I'm gonna post several, and let anyone who wants to guess what game each murder belongs to.
Throwing them off the roof, letting them see the fast-approaching cobblestones as they wait for their lives to end in fear.
Sneaking up behind them and snapping their puny necks.
Leaping to immense heights, showing them that they face no mortal man, but a GOD who walks upon the earth, crushing their spirits before crushing their bodies.
Stalking, hunting them them, hiding just out of sight, then ripping open their throats, wetting the ground with a spray of their blood, and leaving them for the vultures.
Humiliating them by shooting their weapons harmlessly out of their hands, letting a well-placed bullet destroy their very manhood, then, as they stand redoubled in shame and torturous agony, I mercifully end their pitiful lives with a final shot to the forehead, letting my laughter be the last thing they hear.
Sneaking up behind them and casting a cruel spell that leaves them a witless simpleton, barely strong enough to stand, and dying of a slow poison.
Moving like a shadow around their own fortifications, silently crushing them beneath my mighty hammer.
Holding them at gunpoint, humiliating them by robbing them of whatever useful items they may have, then knocking them out, letting them wander back to their allies... with high explosive stuck to their backs.
There's bound to be more, but I am actually having trouble recalling more games with actual proper guards. I may edit this, if I don't get lazy