Thats an amazing Score! Thanks for Playing ^^
Yeah, regarding the mouse DPI there are some issues, generally aiming and such. I haven't worked with that much yet and there was not a lot of time to optimize, but thats definately something i will work on improving.
And yes the crosshair and shooting system in general is very flimsy from its very core haha, the bullets come from the guns barrel, but that is fixed in place with the cam, so depending on the distance the crosshair will not be where the bullet lands unfortunately. I might look into hitscan next instead of classic collisions.