I'll be the oddball and say Hellblade. The mechanics aren't deep, but there's some really brilliant design going on there, with how the combat system not only ties directly into the overall narrative but is actually an extension of it. Senua's voices acting as audio cues to attacks you would otherwise be blindsided by works wonderfully. The ability to counter, focus, and then retaliate never got old for me, and the tight camera angles gave combat an intense, almost claustrophobic quality to it that made things feel even more menacing. I also liked that the combat was, at times, blatantly and intentionally unfair. Times when you were going to take some punishment and you could never 'git gud' to the point that it became a breeze. There's no mastery, here, only survival, which is exactly how it should be for a game like that.