As you mentioned, I didn’t make the role of upgrades very clear, and many of the commands ended up confusing and overcomplicated. That turned out to be the biggest flaw of this project, and it’s definitely an area I’ll focus on improving.
For grabbing and throwing, the controls require aiming with the mouse before pressing space, which feels a bit clunky and can easily come across as buggy. As for camera rotation, I personally get motion sickness from 3D spins, so I avoided it here. Still, I’ll keep your suggestion in mind and think of better alternatives in future games. Thanks a lot for such a detailed review, it really helps me know how to improve next time!