Excellent. One of the best games I've seen on here in a long time. Even more impressed that you made it in such a short period of time. I'd love to see what you could pull off given more time.
Hint for getting the secret mode:
After you win the story mode, the message you get contains "DO.NOT.FIRE". That what you will need to do to get to the secret mode.
Good fun. Great controls. Nice ambience
Pretty cool concept. I really like secret ending.