In one of the apartments player finds a note that is a noise complain about the neighbours dog barking constantly. It's one of a two notes that we can find in this building - that way we can initiate this mini-quest from multiple interiors. When we get to the apartment next door - we find a safe with a letter nearby written by a lady declaring adoration for a loved one in which she mentions a painting to encourage a player to take interest with the ones inside the apartment. I placed some paintings like a painting of a married couple, kids paintings that player can hit to make them fall down. There's nothing behind the pictures in this room but If he goes further down the corridor he finds a locked door that he can see trough and behind them on the wall - one more painting of a dog.  There's a window in the line of sight to indicate to player the possibility that he can get there by parkouring on the rooftops of outside buildings. To make this interior easier to find from outside - I've placed a bag stuck to the window frame that sways in the wind. ​When the player knocks down the painting - he finds the code to the safe. To make the return to safe more pleasant to the player - I've made a shortcut trough the bathroom.