I was quite surprised by your concept. Thought it would be a classic space shooter but it turns out it was just a mini-game, well-played! I liked the pixel art a lot, and the animations are flowing well with the style. I imagine you've have quite the work to set up those scenes.
Unfortunately something VERY weird happened when I played. The game opened, and I start shooting around, when suddenly it just closes, without warnings or errors, just a complete shut down. I open again and it seems working fine, but now the enemy ships are coming from behind me... anyway, I continue playing, until I die and go to the second layer of gameplay... like said before, I was surprised by that, a good feeling, but then I can't interact with anything, not the arcade, nor the other guy at the arcade.... I manage to pass through the door, but then can't interact with the bed nor the computer. It must be a weird one-of-a-kind bug that happened only to me, but anyway I just wanted to inform you so you can test further.
Some things I think it can be improved with minor changes are the UI in general (symbols of interactions and text) and also I missed having a music and some sound effects, it would surely add a lot to the experience.
Given the time you had to make the game, it's a very good work mate, congratulations :)