I appreciate the effort you put on emulating an old OS, it goes great with the theme of the game and helps a lot to reinforce the experience. Even if the story is captivating, I think the gameplay mechanics block the full potential of the experience. In cases like this, where time is a limitation, l'd advice you to focus on the part you consider the most important of your game and put the whole effort on everything around it to reach its best possible form.
You did it great! Keep polishing your skills and developing games, eventually you'll reach a point of excellence. This games has really high notes.