Really cool core concept, with a bit of polish and adjustments it would be super fun I think
Maybe speed up the gameplay a bit? Increase the amount of blips but make them restore less time so you have to do more actions.
I felt that I often was just looking and not seeing anything so I couldnt do anything. (since the blips are random theres a chance a player might get really unlucky and not spot any at all, but if theres more, thats less likely to occur and also its just satisfying to find a blip so it should happen more often)
The reticle upgrade seemed to be the best by a long shot, its a lot cheaper and with moving the mouse around it gives you the most vision. I would make the other upgrades a bit stronger and/or cheaper
I also was confused by the 3 numbers on the right that were stacked on top of each other, maybe separate them and make it more clear what each of them represents.
Some extra suggestions that would be nice but not as important as the other changes:
Sound-effects, screen-shake on blip pickup, make the grab-arm extend animation not as linear but instead accelerate and decelerate in speed (Essentially tween or lerp it), make increasing in score more satisfying (sound-effect, color change in score, little animation, do the "score increase number that floats up and then disappear like in so many video game"-effect)