Thank you so much for the feedback!
The game surely needs more feedback on a lot of things so I'm sorry that many things weren't clear. I There's unfortunately some issues with the mouse detecting targets and the pickups right now that I'm trying to sort out, which may have hindered your ability to actually shoot things and do the loop, but you seem to have the main idea about what you're intended to do.
I'm actively updating the game so bugs should be rapidly sorting out over the next couple of days and the feedback issues should also get clearer now that I've seen at least a few things where people get hung up or confused.