It’s a single-player game, no such thing as OP! Well, it is a must-have ability, which you could argue makes some of the choices of abilities less interesting because you have to get this one, but you get so many ability points it’s really moot.
To make Rush Assassination work well late in the game though you do have to spec into it and have the right gear. The engraving that adds an additional target to the RA chain is, how do they say, my jam.
Still loving this game. Still need to mop up the Cult to finish the Demigod set, but am going through the First Blade stuff right now. Damn, this game has some freakin’ dark narrative and story telling. Very well done and dramatic, IMO, but still pretty damn dark.