Hey STRUM,
First of all, I love the art style! Good job. And also props for using Godot with 3D! I played through your game and one thing that jumped into my eye immediately was that I really wished you would have made that tutorial interactive instead of a narrative. Being able to move the things around and already play with them made me (involuntarily) ignore the dialogue that was going on below. If you used outlines and explained the process once in a way where the player is walked through it, it would've worked more intuitively I think. Its also hard to hit the opening gap of the gun machine, this almost caused me not to play your game simply because I didn't understand how the crafting works.
I love the transition then from something what feels more like a narrative/crafting game over to a shooter!
Once you unlock the gun it gets hard to aim in the small corridors because the player is in the centre and overlapping the enemy while you're trying to look at them. You should've moved the camera a little to the left/right or transitioned to a closer shoulder view.
The end screen was cute!
Overall a very good job. If you give this game some more polish I think it would really really shine!