Cool concept and great fit for the jam's theme! I attempted 2 runs, and they both played out the same (day 9). Two points for improvement:
1. Often I saw loot but it was too far away and just flew by. Would be cool if the arm was longer. This could be too OP, so maybe the arm is initially short, but when you press LMB, it gradually extends. This way you'll have to predict trajectory of materials, and potentially miss. Such mechanic might create some tension for the player, I believe.
2. Tone down the CRT shader - it is good only in moderation. I found it too obnoxious, and it made the text impossible to read (especially the intro text box).
Anyway, hope you find this helpful somewhat. Congrats on making the game though!