Sometimes, there will be a zombie behind the bars on the right side of the screen that you can't reach. The zombie will walk in place and when it attacks, the attack might hit your character. The zombie can be killed using the Shotgun.
Additionally, the companion may go to attack it and get stuck in the counter. This can be fixed by going outside and reentering the building.
Zombies often spawn on top of the bars on the right of the first room. When alerted to the presence of the player, they will drop down, giving the appearance that they "fell" from the ceiling without leaving any holes, unlike a rush.
The "C" in the U-ConBank logo is partially blocked by a street light. The confusing letter can be revealed by going inside, pausing the game, and looking at the top-left of the screen.
There is a door on the other side of the counter in the first room, though it is inaccessible.
There is an "888 Food Store" adjacent to the bank, though it is inaccessible.