Dodjer

My suggestions:

1: Make it infinite. If you don't want to change your code, just do this:
Create event:
myx = x
myy = y
in your death event, instead of destroying the instance
x = myx
y = myy

2: Make the enemies slow down when they get near you instead of speeding up. I know that changes one of your key elements, but you might be surprised at how much better it feels. :) Remember, most people won't have played your game nearly as much as you have when you release it, so balancing is really hard.

3: Make space stop you (only needed if you were to implement #2)

Overall: I like the simple concept, and it's fairly well implemented as is. With the couple of tweaks I put above (and maybe permanent scores?), this would be a fantastic app game. As is, I give it a 3(.5, but I can't put that in so I'll average as a 4 :) ). Any updates, mine or anyone else's, and I'll re-review. :)

Could use some improvement but interestingly addictive :D