Neat game and loved the intro! I had a tough time winning and figuring out how to expand my shield after placing it, but it was satisfying when I was able to get the shield up to protect some of the poor cubes at the last minute.
sound and graphics were pretty good though I did get a bit of graphical/audio stutter during the intro (my PC is pretty beefy so not sure what caused it).
Great entry esp for your first jam!