Developer posts on Steam Community forums confirm that offline play does not require the standard research/unlocking process. 2. Campaign & Historical Missions
He walked back into the hangar, no longer a pilot of "cardboard" scouts. To his left sat the ; to his right, the sleek S-97 Raider . Every helicopter was finally green in the menu. He wasn't just a pilot anymore—he was the commander of a century of vertical warfare. Heliborne - Starter Guide heliborne unlock all helicopters verified
Start a "Co-op Battle" for 2 players and set a password so you can claim all objective points yourself. Developer posts on Steam Community forums confirm that
to rapidly earn the points needed to unlock the entire roster in roughly 30 hours of gameplay. Verified Speed-Unlock Strategy (Solo Farming) to his right