4-3 is the Battle Map owned by VRU and is accessed through 3-4. PvP is enabled here so once entered, there is no protection from Demilitarized Zone and if you are shot, you cannot jump a portal until a short cooldown. In the middle of this map, there is a portal that leads to 4-4. 4-1 and 4-2 portals are located on the top and bottom left corner of the map, respectively. It is the main method used to access the uppers through 4-4 for VRU.