Not seeing a way to contact you other than this comments page so posting info here.
First of all this is way cool! It def brings the game into the 21st century, and I really love the enhanced graphics mode, I felt like I should have been sneezing when I was in the particles!
Couple of things:
Im using Rift S with touch controllers and there are no thrusters. I can warp around and rotate the ship but thrusters are a no go, on either left nor right controller.
UFO hit area needs to be expanded, bullets go right through the disk and one time I had it flying directly at me with the leading face of the disk headed right at the ship. Even with constant ROF direct hits to the face, it wasn't until the ufo was within an inch or so that a hit was finally registered.
Keep at it! I look forward to seeing future iterations! Playing this made me wish you'd consider doing a Tempest game!