Can't Stop MUST SURVIVE (PTG-d4) [Godot 4.0]

This is the fourth iteration of a high-octane shooter game for the Pass the GAME Challenge.

Day 1: https://ghost-wave.itch.io/space-flight-godot-4

Day 2: https://made-by-gare.itch.io/cant-stop-must-survive

Day 3: https://east4.itch.io/cant-stop-must-survive

Stuff i did (or attempted to do):

- clean up code

- restructured the scene system

- cool retro effect shader

- auto spawning enemies

- optimised game for file size (30mb -> 5.5mb)

- accidentally broke pause menu  ツ