Became a second generation Pilot

To perform your first Regeneration, you simply need to reach Level 50 and choose the option to Regenerate (this Generation has no challenges tied to it). Make sure you earn "All the Hardware" before regenerating, as doing so will reset all of your unlocks and give you more work down the line. You earn experience and credit toward challenges in every game mode, including Campaign. I personally get the most points in Hardpoint matches, picking a spot and defending/retaking it the entire match.