Hi, in case you didn't try this you need to be zoomed in to pan (min zoom shows the entire room), and drag the mouse to near edges of the window. I've added a fullscreen option to the page which may alleviate browser window problems :)
Peak art and music, sets a great mood which the writing adds to. Gameplay remains interesting throughout, with a few mechanics introduced to catch the player out. Wonderful commitment to the style, feels really polished. Great job :D
Fun idea perhaps hurt by scope creep. Mechanics could do with more in game tutorialisation, the tutorials that are there are easy to skip past accidentally. I like the vision and would like to see how this project ends up if it is continued :)