Very cool entry! As others have mentioned, the visuals are fantastic. Both the dithering stuff and the overall lighting/fog, but the lamp posts rotated in all directions also really added to the vibe and I am a big fan of the design for the grapple gun!
I think the enemies are a little hard to see sometimes, especially considering how much you fly and loop around, so some better directional indicator such as sound would be welcome. I was also wondering how large the actual repeating space is, is it the volume of one "chain cube"? I think the level design could have had some more recognizable shape/feature somewhere which would help the player getting a better grip of where you are and how everything relates together across world instances.
By the way, the looping itself was very impressive and smooth! I'm guessing there is some fog effect in order to hide when new instances are created.
Love to see more Godot representation as well, we have used the engine for a couple jams now after switching from Unity and for the most part I think it's just way more convenient for this scale of project, even though some things are a bit of a pain.