---QUOTATION--- I just played through the cordon and garbage... It's fucking awesome. ---END QUOTATION---
Btw, to turn on the grass, type rs_details on in console. And, also, important note - do not confuse military and stalkers. They have the same visual, but stalkers are neutral to you until you don't approach them with weapon. So I recommend to check the community of nearby NPC with "Contacts" menu.
Swamp is incredible. Those reflections on old screenshots weren't photoshopped