Easy way to get to 200+points
Purchase z900 and both ammo boxes, get a hammer. Repair cade until you get 35 points then purchase magnum. Dismantle z900 and merge with magnum. Each shot you do with the crafted gun gets you 1 point. Shoot zombies and repair till you get 200 points, purchase gluon
Other ways: shotgun, ammoboxes, get double barrel craft it into fracture get 100+ points.
slinger pistol is 1 point per shot use until you can get a decent meele