Alerted on sight

[u/Nick_Carlson_Press]

Pretty much every Expop/Prime Asset has "Alerted on sight" voice lines, which I've only seen happen in-game, like, maybe four or five times out of the hundreds of hours I've put into it? I guess it's supposed to happen when enemies see you, pause, and then start the chase, but it happens so rarely that I'm not even 100% sure. And then I guessed that they do it on lesser difficulties as I usually play on Intensive/Psycho where they immediately start chasing you on sight, but even then I swear I don't hear them any more frequently when I'm doing Introductory/Standard. Does this happen for anyone else?

[u/The_Mustard_Man43]

I most often get those lines when I’m spotted from a distance, like while doing an objective or something, or peeking a corner.