For players aiming to reach 100% manually, Steam community guides detail the specific requirements: Star Wars Battlefront II (2017) - PCGamingWiki

For many players, achieving 100% completion in is a monumental task that can take over 68 hours of dedicated gameplay. Whether you are looking to download a pre-completed save file to skip the grind or aiming to earn every achievement yourself, this guide covers everything you need to know about "save game 100" for this iconic title. 1. Understanding 100% Completion

This is the meat of the save. "100%" means every trooper class (Assault, Heavy, Officer, Specialist) has every Star Card unlocked to the level. Additionally, reinforcements like the Clone Commando, Droideka, ARC Trooper, and Jet Trooper must be fully maxed.

True completionists aim for these extremely difficult high-tier rewards: How long is Star Wars: Battlefront II? - HowLongToBeat.com