1. The clock was at about 2:30
2. I felt like the enemies were in a good place. There was a lot of them but not enough that you couldn't sort of train them all together, which is good I think.
3. I actually did like the arm swapping. Maybe it's just because I remember your presentation from in class, but it felt very natural to me.
4. Yes the controls were smooth and made sense.
5/6. I like the arm UI at the top a lot. I think that was easy to understand. There were some things I was confused about when I first launched it up though. At first, I thought the enemies didn't cause damage, since I didn't see a health bar or anything. It took me a second to understand that the hits from the enemy were subtracting from my weapon health, which was actually my health too. I like that idea, so I'm not suggesting you change that, I just think maybe a dialogue box or something that explains that might be a good idea. Or maybe even adding just in a sound effect when the enemy hits the player to let them know that the hit did register.
7. No, I don't think I encountered any bugs.
Overall, cool game! I like what you guys have done.