Nice music, and really nice game play you need to add info how to shoot different weapons inside the game because not everyone will read description of it on ludumdare page. This game seam a little bit to easy. Also i would suggest aout progress to next level instead of requiring players to go back through menu that is a little bit annoying.
Can you add your game on indiexpo.net ? (it's free)
So we can include also your game in the video ;)
p.s. write #LDJAM in the game's description.