Good first game jam, at least I think you said it was your first.
Maybe have the speed of the enemies start slower at first and get faster as the game progresses to add some challenge here, that would also help take away a bit of the randomness as it was pretty easy to get hit even if you were skillfully avoiding things earlier in the game.
Also as already brought up the font was too high res and also would have been nice to have been scaled up, I could go full screen but when I did that I could tell it wasn't within the pixel limitations of the game, the sprites were indeed at the right size pixel wise, but when they were coming in at an angle they were rendering more pixels than were allowed as part of this jam.
Though this is probably the hardest part I had with this jam, making sure that I was rendering "pixel perfect".
All that said, again good job for your first jam. You at least got a bit more music/sound than I did and yours had a main menu and a way to replay the game, which I didn't get to as I got stuck making my game for other reasons so I didn't get all the mechanics and things in the game. LOL