I just pointed people without jobs completed 99% of challanges on day 2. (ok and some people who took days off at work:) ) Of course they are easy.. and also half of content was nerfed, you can run through campaing within 2-3 hours..
having clear metrics on which to train the robot, solving the technical challanges and creating the infrastructure in a way that hopefully generalises, allowing humans to train on their own using robots as opponents.
May go against the core of your game design but having a gamified mode where you have challanges, collectables, modification powers may increase the fun, engagement, and maybe even sales of your game.