So basically, Voidplaces is the start, the sun is now pink, you go around a map getting 4 vending machines to go into vp_04_ucomplex, alternatively, you can go into vp_01_whitecomplex, A quick and easier way but also dangerous.
in 04_ucomplex, you need to make your way to the bridge in that can be seen in the courtyard of the ucomplex to make your way into whitecomplex.
You can go to pinkplaces from Voidplaces as well, so essentially this act as new fresh route for another person. They need to find 2 keycards to open a door to go into whitecomplex.
In whitecomplex, find a keycard to get another keycard, then use the second keycard to open a door into Voidmall.
Or in Whitecorridors, find a keycard to open a checkpoint, whilst being chased by "it" (probably jimmy). To get into Voidmall instantly.
Then in Voidmall, just find the exit, INNO will soon realise what your doing and just say the keys are in the bathroom. Go through the exit. Then comeback.
"otherside" is considered a dead end, you can also get here by getting caught by "it" in whitecorridors.
After coming back, go to whitecomplex enterance, come back, then find another GREEN exit door. There isn't a map change sadly, probably because its a WIP.

so the order is
voidplace -> ucomplex -> whitecomplex ->Voidmall -> Nowhere mall
voidplace -> whitecorridor -> Voidmall -> DownCorridor
Voidplace -> pinkplace -> whitecomplex ->Voidmall -> Nowhere mall