If I am remembering correctly, I felt terrible after completing the first mission but that may have been the point - make you think about what you are doing. It was presented to the player as authentic threat, then when you get to end you are told it was a test but in my playthrough I killed all the “bad guys” on the way, and could have spared their virtual lives by sneaking around and knocking them out.
It’s been years since I played, but I believe they were a real terrorist attack? It was a test of your capabilities, but not a false flag.
Wow, so same. I spent the whole rest of the game (and generally ever since) trying to max stealth and nonlethal gameplay
Postal 2 can be played through without ever hitting anyone, which I've done for fun. Although it's the exact opposite of what you're supposed to do there, which is the joke.
Haven't been able to repeat that in Deus Ex, you can't play through the campaign as a total pacifist, and Carter explains as much right at the beginning.