Super Jelly of that score though! Awesome! Any tips to share? For me, my tough level is those stupid tanks.
git gud nub! j/k
Tank levels are tough, but try to stay away from the walls because of the bounce shots and try to stay close to them as they spawn so their shots are slower and easier to dodge. You gotta be aggressive on those stages, get right up in their grill, and be sure to switch your targeting to the first tanks that get spawned. When a tank is spawned they wait between 1-2 seconds to fire a shot, so you have a chance to kill 'em before they shoot at you. If you can keep on top of their spawning as best you can, you can get through the level easier. But definitely stay away from the walls! (or at least be mindful if you dodge a bounce shot, that it'll come back to you from behind!)
Try to maximize your score on the brain waves. The first time you get the brain wave, 95% of the time they're all going to chase after the one Mikey. If you can keep Mikey alive, you will only have to deal with their shots and the grunts for a good portion of the time. Once Mikey dies, they all chase after the closest family member they can find. That's when ---steaming pile of meadow muffin--- hits the fan and it becomes a chase scenario, something you never want to get into in Robotron.
Try to clear the area around Mikey, while dodging the grunts and bullets being fired by the Brains. Concentrate on killing all the brains first, then grunts, then spheroids/enforcers. I like to leave one or two enforcers to the end and just collect the rest of the family members.
Remember, Enforcers shots can be manipulated by you! They actually try to either shoot directly at you, or in your path. You can use this to your advantage by "faking them out" in one direction, or stuttering your movement. Also, like the tanks, the further away you are from an Enforcer the faster their shots will be. Leaving a single Enforcer to kill at the end is the best way of giving you some breathing time to go around and collect the rest of the Family members.
For most levels, punching out early and circling around works for the initial start, but once Enforcers start spawning you'll want to try switching your direction up.
Other than these tips, I'm not sure what else to say other than practice makes perfect.