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.
Defeat 25 Hero ships with Fighter ships.
Defeat 50 enemies using Dual Proton Torpedoes with the Bomber ship class.
Reach Rank 50.
Destroy 25 objectives in Starfighter Assault.
Complete all unique Battle Scenarios.
Engage in an Arcade match.
In the Campaign, eliminate a Scout Trooper with Iden’s melee takedown.
In the Campaign, eliminate five enemies at once using the Barrage.
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, destroy eight starfighters in the skies of Jakku.
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".
Get 20 Killstreaks with Interceptor ships.
Defeat 50 enemies in Heroes Vs Villains.
In Multiplayer, defeat 3 enemies within one Vanguard usage 5 times.
Play as all launch heroes in Multiplayer.
In Multiplayer, boost 100 allies with the Officer commands.
In Multiplayer, defeat 150 enemies with the Heavy's Sentry Gun.
In Multiplayer, get 25 headshots with longblaster rifles.
Defeat 500 enemies as a hero on any Multiplayer map.
Reach Rank 25.
Win a match of Heroes vs Villains
Win one match in each Multiplayer game mode.
Win a match of Galactic Assault.
Win a match of Strike.
Win a match of Blast.
Complete 25 Multiplayer Milestones.
Win a match of Starfighter Assault.
Be the first one to defeat an enemy in a Multiplayer match.
Complete the mission "The Cleaner".
In the Campaign, use the Droid to shock three enemies at once.
Complete the mission "The Battle of Endor".