Great looking arcade style game!
Is there an ending? I reached two towers with electricity sparking between them but no where else to go and it kept playing.
It wasn't too difficult (or easy) once you understood what to shoot. That wasn't very clear at the start.
I found the hardest part was getting around the green 'pistons' without falling off the sides. It wasn't clear that they would kill you if you walked on them. I thought they would allow you to jump onto something that was high up.
Sometimes the balloons went under the floor and could still kill you but could not be shot.
When you go into the 'portal' it can obstruct your view of things that are firing at you. Unless my setting is making me too high.
Thanks a lot for the detailed feedback. I have a look at the "balls under the floor" bug. I assume you've not played the original 8-bit game? The pistons can be a pain (even when you know that they kill you), I think some side-view gameplay aspects don't translate well when in VR. But since you got to the end, I'd better add level 2 sooner rather than later.