4Game

So I'm starting to learn Interchange, I've got maybe a 80% survival rate there but that's mostly because I'm sticking to the basement and outskirts, looting the weapon crates/hidden caches. I don't go into the mall very much because I don't like the early game of Interchange; if you spawn in later than others or somebody spawns closer to an entrance they just rush in and turn around and camp the choke points.

I was wondering if there is any secret ways into the mall or into the outer warehouses from the basement. Basically ways to get into the "main floor" of the mall from the basement. I know there is a way into the grocery store from the basement but I can't always accurately pinpoint the location when I'm in the actual basement, I get turned around pretty easily down there.

Thanks for any help at all, I'm looking around at maps and videos about the map but haven't seen anything about the shortcuts.