I like the concept for the game. The speed of the player relative to the enemy is a good mix - it makes it challenging to avoid them, but not impossible.
A couple things I noticed:
- update your game title - it makes a first impression
- For me, the enemies didn't seem to kill me - they would get to where they overlap, but the game kept going. (Player feedback)
- The bullets didn't always seem to kill the enemy. (Player feedback)
The enemies track the player really well. Also, the control scheme seemed intuitive and made for good gameplay.