praise of ROTTR game design
Rise of the Tomb Raider on the other hand has some great stealth gameplay, and it's always optional (I've cheesed hard levels by sitting in a shed with the full-auto shotgun). At Gamescom they showed a gameplay video that had quite a bit of combat (https://youtu.be/xiYy2XNVc2s) and people asked about nonlethal ways to play it, so the next day they published a video on Youtube of the exact same level being played very elegantly without a single kill (https://youtu.be/hGhJc0spPQg)