I liked your entry, and there are a lot of good things about it, but I have a few notes for it if you don't mind me cutting straight to the feedback.
The movement feels too fast, but if you like it that fast, try adding a held button that slows things down.
The camera zooming when activating the movement is too intense, and it makes it even harder to collide with the smaller bits.
In regards to collision, you could make the colliders a little bigger than the meshes to give the player some room to actually see what they are colliding with. However, the issue of not being able to predict collision is mostly caused by the fact that the player cant actually see where they are going. The players vision is blocked by their own sphere, and the way you set up the environments and the objects in the scene made it hard to interpret depth (the darkness + the emissive colored spheres.) I know the vibe you were going for, but I think it would help a lot to add some other larger, more clearly defined objects to the scene to give the player a reference point for depth.
Sorry for the big ol feedback dump. Overall, you did a great job scoping your project and submitting a finished game is an accomplishment. Keep up the good work!