The trees look great, the controls are sharp, the rest feels fine and a solid build it is. However, the player's hitbox (IMO) could have been half the size as it is now, because the way I lose lives feels a bit arbitrary.
One mechanic that I've noticed however, is that everytime I shoot, the bullet's collider will squeeze me back a little and I can eventually push myself off the floor-plane from the back thus falling into the void. Might wanna check that out.