Onslaught at Arda I is the adventure supplement for Star Wars: Age of Rebellion Roleplaying Game exploring the Rebel Alliance s desperate struggles along with the tenuous alliances they form to stand against an overwhelming enemy. This 96-page adventure is set at Arda I a secret Rebel Base and features mass-combat rules that Game Masters can use to give life to massive battles. Meanwhile in-depth gazetteers cover the Arda I base as well as all-new adversary and vehicle profiles.