Here is the full list of all 31 A.R.E.S. Extinction Agenda EX achievements.
Finish every chapter without using repair
Achieve character level '5'
Achieve character level '6'
Perfect the Carrion boss fight
Perfect the Zypher Pod boss fight
Perfect the Sentinel boss fight
Perfect the boss fight in chapter 5 with Tarus
Perfect the boss fight in chapter 5 with Ares
Perfect the Prime Guardian boss fight
Perfect the Minos Cannon boss fight
Collect all Upgrade chips
Upgrade every weapon and ability to its maximum level
Perfect all the boss fights in Hardcore Mode
Finish the game with Tarus
Collect all the Data cubes
Beat the boss in chapter 5 with Tarus
Get stronger!
Beat Zytron Walker, Zytron Trooper and Zytron Booster with Tarus
Beat Carrion with both Ares and Tarus
Finish the game with Ares
Achieve character level '4'
Acquire all abilities and weapons
Beat the boss in chapter 5 with Ares
Upgrade one of your weapons to its maximum level
Perfect the Goliath boss fight
Find the drone repair bay
Achieve 99 attack combo
Break the enemy’s shield with Plasma Shock or Lockdown
Beat Zypher Pod with Ares
Destroy 5 or more enemies, at once with Solar Strike
Beat Goliath