There's basically nothing to do. The incrementing gameplay has no intrigue. At best you are making the area easier to hit, but those upgrades make so little difference for how much they cost. And to make matters worse the goals include these cancerous "x after death" goals where you have to hope RNG lines up for you to be able to have a chance at it. I gave up at the get money after death goal, which additionally requires you to have the goal be a random money one.