Atomfall - Can You Still Finish the Game if You Kill EVERYONE?

Atomfall, Rebellion's recently released survival-action RPG has a trick up its sleeve: every character can die. So, can we push this to its absolute limit? We spoke to no one, tried reading nothing, and killed every NPC that got in our way, and still, reached The Voice On The Phone ending! Just how difficult is it to kill everyone in Atomfall, and is all that murder even rewarding? Let's find out.