Definately not bad, but needs work
I just have 3 suggestions:
1. The music doesn't quite match the game you made. (Even though it is REALLY good. Helix6 Rules.)
2. You need to use the stopAllSounds() command when you die. Currently, If you die, and restart the game, the music from the old game, the one you just lost, mixes with the music from the game you just started. This makes for some really wierd stuff. I know you already know about this command. It seems you used it when the big dog gets shot...
3. If you are going to remake a game that has already been remade several times, make sure it has some unique aspect to it. I'm not sure what you would do when it comes to this game, but I'm sure you could come up with something. You obviously have lots of potential.
So keep on making games! I would just test it a little more before you release it on NG.