There is no easy extraction from Reserve (Except for the Sewer Manhole, where you can not extract with the backpack). You must either have some expensive items in your backpack, wait at the train station (which gets hoarded by the player scavs by the end of the raid), or you have to pull the lever which opens the extractions. Although those levers can also spawn in the Raiders, who will easily kill you if you lack experience fighting them. And the most commonly used extraction "D2" is often being camped from one of the dark corners of the underground tunnels. Nevertheless, our Pros are named so for a reason, which is that they can go into any raid and against all odds extract tons of loot with their backpacks.