Hi SuperSalteGames!
Wow! This game was so tough! I think the tagline really sells it well - twister for your fingers. I think the concept of putting it in space and then defending a planet from meteorites is a pretty cool artistic setting!
I would suggest easing the player in to the difficulty a little bit more slowly. Although it may seem like a small jump up to go to 2 keys, I was utterly frozen when I saw my first LM combo. Maybe force the RNG to spawn a VB combo or something similar to build their confidence, and then hit them with the left-hand-to-right-side-of-keyboard power move.
Overall a good concept! I like how you mentioned you are physically joined to your computer throughout the game. Very novel!
Best,
Brandon from TheIndieDream