Started Metro Last Light, quit a few hours later. Can't see crap in the total darkness, yet the AI run around at full speed with no flashlights and can all spot you the second one of them goes down. Also npc's and monsters aren't solid, so when they run up to attack/bite you, they go inside you and you can't shoot them.
Also the weapons aren't that satisfying to use, it's very very linear, and the story was kinda meh and really expected you to already have a good understanding of the setting by playing the earlier games or reading the books.