Reminds me of One Finger Death Punch or Iron Snout, trying to juggle threats coming from both directions. I will say that since the same enemies always come from the same direction, it's too easy to get into a rhythm - shoot left twice, then right once, repeat. But still, it's complete (even has a main menu!), fits the limitations, and looks great (nice lighting effects), which are good boxes to be checking for a game jam. Nice job!