Pretty cool for your first game jam entry. I'll say the difficulty could of been toned down a little, especially at the beginning. I retried a few times and I was barely able to kill anything. I think you should have made the projectiles fire in the direction the mouse was pointing in instead of the direction of the ship. Or zoomed out a little, given a bit more manoeuvre space for the player so that the game was closer to asteroids. Nice addition of the freeze time feature.