Here is the full list of all 43 STAR WARS Battlefront II achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Reach Rank 50.
In the Campaign, destroy eight starfighters in the skies of Jakku.
In the Campaign, use the Droid to shock three enemies at once.
In the Campaign, eliminate five enemies at once using the Barrage.
Play as all launch heroes in Multiplayer.
Defeat 25 Hero ships with Fighter ships.
Defeat 500 enemies as a hero on any Multiplayer map.
Win a match of Galactic Assault.
Win one match in each Multiplayer game mode.
Complete all unique Battle Scenarios.
Engage in an Arcade match.
Reach Rank 25.
Complete the mission "Inferno".
Complete the mission "Ashes of the Empire".
Complete the mission "Project: Resurrection".
Complete the mission "Discoveries".
Complete the mission "Until Ashes".
Complete the mission "The Battle of Jakku".
In the Campaign, eliminate a Scout Trooper with Iden’s melee takedown.
Complete the mission "Cache Grab".
Complete the mission "Under Covered Skies".
Complete the mission "General Distress".
Complete the mission "Royalty".
Complete the mission "The Outcasts".
Complete the mission "The Storm".
Complete the mission "The Observatory".
Complete the mission "The Dauntless".
Complete the mission "The Battle of Endor".
Complete the mission "The Cleaner".
Defeat 50 enemies in Heroes Vs Villains.
Get 20 Killstreaks with Interceptor ships.
Destroy 25 objectives in Starfighter Assault.
Win a match of Heroes vs Villains
Defeat 50 enemies using Dual Proton Torpedoes with the Bomber ship class.
Win a match of Blast.
In Multiplayer, defeat 3 enemies within one Vanguard usage 5 times.
Complete 25 Multiplayer Milestones.
In Multiplayer, defeat 150 enemies with the Heavy's Sentry Gun.
Win a match of Starfighter Assault.
In Multiplayer, get 25 headshots with longblaster rifles.
Be the first one to defeat an enemy in a Multiplayer match.
In Multiplayer, boost 100 allies with the Officer commands.
Win a match of Strike.