We're working hard on the project. What I can say is that the doors are in the only accessible interior of the building, the first building on the left. You have to find four medicine boxes and give them to the NPC. There's also a shotgun inside. Once you've eliminated the NPC upstairs, you can access the apartment and then look for a car key. The car is in a parking lot with other cars in that apartment complex. And I really appreciate you pointing out the bugs in the game.