Good game.
The game is good, but I have to tell you a couple of things that you might need to fix.
You forgot to remove the point where you clear level 4 on level 5, that is, when you move through the same spot on level 5 you will be warped to level 4 again.
Also, you collision detector seems to be a little messed up, the character won't rotate over its axis, and you take damage if a bullet hits your health meter and that imaginari axis.
The game is good, challenging and entertaining. I hope that this would be of help to you.