Metro: Last Light Redux starts a little while after the first game ends, so it's essential to play them in order. Mechanically the game is identical to the first, but with a bigger budget. As before, you're mostly going to be guided by NPCs through corridors while following on a linear story. The story is a string of unfortunate and extremely unlikely events that culminate in a great final showdown. The cutscenes are generally a lot more interesting and have more action in them. Overall it was a really good, memorable experience (both games together) and had a proper ending. Still don't know who the Dark Ones are. Still a bit buggy.