I think you misunderstood what my comment was stating. By polishing this up I meant completing this for production (if that is what your intentions are). For example, more levels. My game too has a lot of work if I want to actually try to publish for sale etc. 

Again, I loooooved the aesthetics to this game. I am assuming you created the assets yourself except for the font. I am really digging your art style. 

Keep up the great work!

Particle effects certainly look good and add to overall feel of the game, though they're not necessary all of the time, especially in a game-jam where you only have 7 days to develop the game! (We also didn't add particle effects because we were running out of time). I guess I was referring mainly to the box glitch (which I didn't realize was intentional, but now that I think about it, I can see how it can be considered as an alternate, easier version to beat the level), the way the physics objects can get stuck inside the level geometry at times and the way that sometimes the laser switches targets while still holding the left mouse button. These are minor issues though, I definitely know how hard it can be at times to get physics working properly and realistically in Unity, and I think you still did a fantastic job for a game that was developed entirely from scratch by a single person!