the aiming is pretty fiddly and it has anti-synergy with a lot of the upgrades. e.g. you are incentivized to move fast, but it is practically impossible to aim while moving.
instead of the current aiming that moves a target around discrete points along the edge of the screen, i would suggest just using the OS native mouse cursor to let us aim with much finer control and have the dotted line extend in the direction of the mouse cursor. otherwise the only effective way to play is to stay still and carefully snipe.
fun concept though!
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edit: also this choice of font for the itch page is extremely difficult to read at high resolutions