Finishing Level 1

Hello everyone, im coming close to an end of level 1, today was a big day, and I should be able to finish it tomorow by fixing a few bugs and adding a few things to make it a functional starting tutorial scene. I have got almost to the ending part of level 1, I have made the boss fight/scene (it is not a cutscene, that will be for other levels), but its not finished, because there are many glitches for the user to stay alive but not reach the end, resulting in bad votes so I need to fix that. I finished the map probably just need to add a few things here and there but most of it is fine. I fixed the aliens and for each one, I can stick with the default settings (speed, how far they move both left and right) or I can put custom variables, using @export var, which puts an variable on the node. This was good, as before I had a problem of an alien walking through the wall, but now that is fixed. SO basically I just need to add armor, a laser item, for the user to use to shoot, but right now I am just doing the basic things for the game and sticking with my little tutorial for level 1!