Just finished with a score of 46,919 (took half an hour) and the game was indeed quite exhausting to play, but certainly fun! Good presentation and opening cutscene (though no exit button on the main menu?). I also enjoyed the music and sound effects, really made me feel quite immersed (especially the siren going off). On my monitor (ultra widescreen, with windows scaling on) some of the tutorial buttons were a bit cut off. I actually quite liked the control scheme after getting used to it, made it feel a bit like a simulation of some mechanical turret being aimed manually (maybe it would have been cool to show some mechanism reacting to the tapping of the keys and it jamming for instance when you press both keys simultaneously). Unfortunately I wasn't able to read most news headlines, too busy concentrating on aiming (maybe you could pause the game for a few seconds to flash the headline, but that might go against the game's message).
All in all, very nice game!