There is an achievement for both this level (Dead City 2) and the previous one (Dead City 1). If you locate all the "Ranger Caches", you will satisfy this condition. Note that the caches you found ...

For this stage, you will get a penalty with your controls when a snot-nosed brat uses Artyom like a carnival ride. This means normally weak creatures (like Lurkers) become extremely dangerous when you ...