Some I am crouched and hiding in mesh with no collisions.
They didn't upload in order though, I can tell you though:
Picture 4: missing collision - I am not crouching, use translocator to teleport between pipes in \/ pattern, and you can go there inside meshes.
Picture 5: missing collision - I am crouching, you cannot stand up, transloc while crouching onto the pipes, and you can hide inside the pipe.
Picture 6: missing collision - Same as 4, except with flag you cannot transloc, use hammerjump instead
Picture 9: missing collision (You get stuck in a falling position, you can't move but you're covered from anything) - I am not crouching, just translocated there
Picture 10: missing collision - I am crouching, you cannot get up, transloc while crouching and hide in pipe mesh
Picture 11: missing collision - crouch and you can slowly walk inside
And apparently I missed one picture, can't upload but it's right next to the Picture 11 spot, there is the fence you can jump on, and you can walk a bit inside the arrow mesh and the metal mesh as well, just like with the lamp and the metal mesh.