All the sprites are really good. The background sound fits well to the game. The concept is unique and you have executed it well. This concept can be turned into a VR game. "Notice of Termination" suits the theme. This is a really good example of designing the entire game in the same theme.
However there are some minor things you should look into. You should try adding additional sounds for the player. If you want to make the office large, if you can add a mini map that would be great.