Nice little shooter, though the colour schemes needs a little work: enemies need to be clearer and the clock I didn’t realise was a clock until later, I thought it was just a white bar.
As a shooter, it was pretty simple and that’s not a bad thing!
Looking over your code, something you can do is to create multiple enemies with a single script: use the metadata of the scene (top node) and add custom variables which you can then reference in the script with the function get_meta(), where you pass in the string of the metadata name, i.e. get_meta(“health”), which would have saved you copy and pasting the same code from enemy to smallSnake, saving you 15 lines :D
Great effort here! Good work!