In games like Deus Ex and Dishonored, the player can leave combat ability on the table and go through the entirety of the game without fighting anyone. Stacking boxes to get to where they need, sneaking through complexes, and talking down the big-bad are all options that get you to credits. If you could coordinate with your team, i'm certain you could get a similar playstyle going in quite a satisfying way in PF2e. Realistically though, people come to this game to roll dice with their bardiches out, so you're more likely than not going to have a standard grab bag of murderhobos as your teammates.
With friends like these, how viable are your Adam Jensens, your Faith Mirrorsedges, or your Frisk Undertales? Can you really set up a character that doesn't use any combat ability and find success in a standard adventure path, relying on your team to take on your share of the combat encounter budgets for you? In what ways would you pull your weight to justify the character's "slot" in the party?
Your character needs to be okay with participating in killing things, since that's the game. But it's entirely possible to build a character such that striking/taking offensive action is not their typical rinse and repeat. You should probably still be okay with killing as a last resort though, since otherwise the party is gonna be pissed if you get into a situation where you attacking could save someone else's life.