Prerequisites: Ensure that the map has no roboports placed down. Preferrably freeze time to day to let those personal solar panels cook up power.
- Provide the player character with MK1 power armor, 24 solar panels, MK1 personal roboport, 2 exoskeletons, and 2 MK2 batteries. Add 10 construction robots to the player's inventory. Wait until the batteries are full so that the personal roboport has plenty of power.
- Construct Tier 1 belts. A lot of them. Then mark all of them for upgrade to tier 2 belts. Ensure that the roboport isn't disabled. Also ensure that tier 2 belts are in player's inventory.
- Construction robots will struggle to work on upgrade blueprints specifically. Oddly enough if you place down tier 2 belts for normal construction, the robots do not struggle, especially when a lot of them are placed.