Thanks!
Yeah, I tried to tune the firing clunkiness to be challenging but not too annoying. The guns turn just a little slower than the vehicle does, which seems to make movement feel just slightly sloppier than it really is. Don't know if I got that tuning quite right. But it could definitely be (and was) much worse.
Also I have to admit that the tactical usefulness of the walls was one of those happy accidents. It wasn't the plan. But once I started playing and realized it could happen, I had to lean into it and give the player some space to maneuver outside of them. I also like that there's some risk to being outside the walls because you're right beside where new enemies spawn!
FWIW, I did experiment with D-pad movement and that should still be in the build. But I don't anything about browser support for game controllers.