1.) I think the running and walking speeds feel good, and I don't really feel a need for an intermediate. The jump also feels good, although I didn't really feel the need to use it. The one thing that doesn't feel good in regards to the controls is the camera, which jumps around really badly for me.
2.) I think the map has a good amount of clutter, and I like the models. It did feel a bit strange to clip through all of the environment though.
3.) I couldn't figure out how to pick things up, I'm not sure if I wasn't close enough, too close, or just not pressing the correct button.
4.) I think a health meter, or at least some way of seeing how damaged you are, would be useful on the HUD. Otherwise, I think your planned features are good.
5.) I felt pretty lost as for what to do. I knew from your presentations in class that you could pick things up, but I couldn't figure out how to do that, so I ended up just wandering around the map for a bit.