I like the neon-blur visuals and the overall handling but some things need tweaking:
1. It would be nice to be able to delete specific parts in the editor (or maybe I didn't figure out how to do it yet).
2. If you put more than a few accelerators, the bullets start tunneling through the enemies, making it impossible to hit them. Depending on what kind physics engine you use, I suggest using time of impact solving or casting a short ray behind the bullet to always register an impact.