Scarecrow's Safehouse

Once you've uploaded the toxin sample for Oracle to check, you now need to investigate Scarecrow's safehouse. Make your way to the rooftop and take down the guards outside. Continue to the glass roof and position yourself for a takedown. After taking out all the guards, approach the gas chamber for a scene.

After the scene, you'll be cornered by the militia outside the building. Press the down DPAD to remote control the Batmobile in battle mode. Six unmanned tanks will arrive in the area. You have to engage these and destroy them using the Batmobile's weapons. You'll know when they're about to fire so make sure to stay away from their line of sight. After destroying all of them, position the Batmobile in the highlighted spot to continue with the story.

Drive to the marked location and touch the icon to start the Weapon Energy Diagnostics. Follow the Batcomputer's instructions to complete the diagnostics and Batmobile weapons Training.

Once you're done with the Training, head to the next location and engage the unmanned tanks. Use what you learned in the previous weapons diagnostics to take them out. After all tanks are dealt with, the objective will be complete and the next one will be given. AR Challenges will also become available afterward.