I tried to make the guard notice you when you are running, so you are supposed to walk while stabbing them from the back, but yeah...a plan that didn't make it in jams, though I make it automatically run when you walk/run for 3 seconds because my pinky know that very well too, lol.
But your suggestion might be better for the jams as it was a short game with no time to know all the mechanics. Thank you for playing the game & the constructive feedback help a lot!