Had to play the other wheelchair game submissions. My original idea for my game was more similar to this and I think what you have it pretty cool. I also jumped when one of the ghost creatures flew at me lol. Main feedback I would give is that the movement overall should be faster including turning, moving, and crawling (but maybe that's just because I am so used to zooming around for my game lol). It made me actively not want to collect ammo and instead opt to just try and dodge the enemies. Still, for your first game in Godot, especially in 3D, it was very good!