It's pretty cool that you were able to make a roguelike/lite in such a short amount of time.
There are a few issues: The lack of sound effects hurts the presentation, there is exactly one enemy attack pattern in the entire game, unlocking the last weapon is a bit too grindy for my tastes, and it can take a while to figure out everything that you have to work with.
However, let's put all those issues aside now, since this game is pretty enjoyable as a whole. It controls well. It has a neat idea where you can fly around in your spaceship to avoid enemy fire (super fun, too). The levels are generated nicely. The soundtrack is great. The graphics are good.
This is a flawed but very enjoyable game. I'd recommend everyone participating in the jam to give it multiple tries, since it may take a while to figure out everything the game has to offer (such as the fact that you can re-board your spaceship mid-level at any time).