Is it possible to do a pacifist run (minus exceptions like bosses)

In the campaign I noticed you could skip a lot of the battles by just running by everyone. Now that I beat the game on hard I was thinking of doing a sort of pacifist run where I parkour my way through the levels without killing anyone. Obviously this wouldn't include the boss Titans or maybe those Titan only segments but other than those do you guys think it's possible? Other than when you have to kill someone to advance the plot (viper for example) ofc

I don't want to do like half the campaign trying not to kill anyone before realizing it's impossible which is why I'm asking y'all. Thanks