"what do you mean, why would i do that?"

If you're anything like me, you probably get bored a few hours into an fps game with a long story and start blazing through the game, and if that's the case, you might wanna NOT do that in this game. I found that this game is generally interesting compared to other shoot 'em ups and really enjoyed my ten hours. However, I do regret going through it as fast as i did because every group of enemies had different conversations and they were full of jokes. Before you start thinking, "why dont you just replay it", its because i'm lazy and now know everything that will happen and you can only experience it once.

what does that mean

In this game, typically outside, the game is ♥♥♥♥♥♥♥ beautiful. I have reached across the keyboard every so often to slam that f12 key (i think thats the steam screenshot one), ill put the screenshots below so you can see for yourself. In the metro, there isn't as much beauty but you'll definitely notice the exceptions! For a game made in 2013, it looks brand new, and this is part of the reason ill buy Metro Exodus.

You either paid or received this game, play it however the hell you want to. Try killing the children in the metro, try luring enemies into civilian camps, or try killing the children in the metro....
Its your game, enjoy it