If seen a few abstract puzzle games so far but yours might be the first abstract score chaser! I really like the whole "early 90s rendering" vibe and could imagine it could gel really well with fitting soundscape. The P.L.O.W. being just as deadly as the asteroids is a great mechanic, that will very well with more risk/reward mechanics.
I agree with others that the beam could feel a bit more "beam-y". Maybe a some flickering or a wavelength effect? Adding controls for repulsion and attraction might also be good mechanics to experiment with. Anyway, you've got a great concept and solid design foundation to build on. Well done!