The idea of using Godot's vector capabilities to reduce the file size is a great idea!
The game is fun to play and the graphics look great. I primarily only used the dynamite RC car as I found it the most effective, but it is cool that there is multiple different ways to go about getting the groundhogs (and snakes) out of the ground.
The only thing I might change is that the sounds are a tad loud, at least for my computer. Nothing I couldn't handle by changing the volume, but I thought I'd mention it.
Great work!