When I powered up the 5th computer, Malwarebytes blocked access to a potentially malicious website (18.104.22.168). I assume this is fine and it’s just trying to load the completion video (I got the hard badge), just a heads up.
More and more inventory throughout the game, and no real way to get more slots? OK, OK, I'll give in to the arbitrary limit and... stop playing. If you want people to pay for a game, make it good! Don't make it so it's only fun if we pay.
I tried each level before looking at the walkthrough (if I needed to for that level). I solved many of the levels, but the most frustrating thing was when I had come up with the solution, but given up because it didn't seem to be working. Requiring less precision would make this more of a puzzle game. Maybe just make fewer spots to shoot from rather than a continuum of pixels widths in a circle? Also, it didn't seem like the arrows corresponded to where the shots would actually go, and many times a star would light up as if it was going to get hit by the shot I was about to take, and then the shot would go wide. This game, similarly, has missed the mark.