This was really nice! I really like games like this, where you're in a first person perspective and exploring a vast impossibly huge space, really gets the sense of awe.
I think it's an unpopular opinion but I enjoyed the walking and jumping being very abrupt and thudding, it reminded me of E.Y.E Divine Cybermancy, or of being some sort of space marine, especially with the thuds when landing from a high height.
I think the wandering surveillance bot things work really well in this sort of large and imposing architecture. Like, it's not enough that the space you're in is impossibly high, but it's covered by these automatons, with who knows what priorities. The bridge where you walk above one that passes underby was a special moment.
Great stuff, I hope to make something like this some time.