Thanks for all the amazing feedback!! I just had 3 days to work on this game, and I ended up spending a big portion of the time in getting the visuals how I wanted, and ran outta time at the end. I have an updated version that has few more levels (including a boss virus level), and it is also tweaked better to be more challenging. I plan on updating it once the voting is over.
Also, for the shattering effect, I wrote a geometry shader along with tessellation.