Here is the full list of all 56 Element Space achievements worth 1,000 gamerscore.
Defeat the infiltrator.
Stop Il Pugno Rosso and find Emilio.
Blow up a tank.
Infiltrate the casino and rendezvous with your informant.
Prove yourself to the Prince.
Stop the assassin from killing the Empress.
Square off against Arthur.
Save at least 2 scientists.
Regain control of Zero’s chassis and your ship.
Gain a companion’s loyalty.
Gain a faction’s loyalty.
Win all secondary missions across multiple playthroughs.
Get invited to the Galactic Congress.
Get the Galactic Congress to rule in your favor.
Defeat the Hacker by destroying his energy sources.
Win the game in Extinction Mode.
Change a companion’s ideology.
...But this ending could be. Achieve a perfect ending.
Unlock a tier 2 weapon.
Unlock a tier 3 weapon.
Unlock all weapons (across multiple playthroughs).
Kill an enemy by knocking them off a ledge with Earth Dash.
Damage a unit with Tank Armor using Trick Shot.
Damage 5 units at the same time using Share the Pain.
Hack 5 turrets with Hacking Protocol.
Use Quantum Swap and kill the swapped enemy in 1 turn.
Have a Soul Possessed Ally kill an enemy.
Kill a total of 25 enemies using Grenade.
Max an archetype.
Max a skill.
Complete "Yet Death Will Seize the Doctor" with a perfect score in every battle.
Complete "What Thing Had My Father Lost" with a perfect score in every battle.
Complete "For One to Say a Soldier Lies" with a perfect score in every battle.
Complete "He That Dies Pays All Debts" with a perfect score in every battle.
Complete "The Warder of the Brain" with a perfect score in every battle.
Complete "If Money Go Before, All Ways Do Lie Open" with a perfect score in every battle.
Complete "The Head that Wears a Crown" with a perfect score in every battle.
Complete "To Follow Mine Own Teaching" with a perfect score in every battle.
Complete "They Stumble that Run Fast" with a perfect score in every battle.
Complete "Foul Deeds Will Rise" with a perfect score in every battle.
Complete "To Revenge is No Valour" with a perfect score in every battle.
Complete "The Arms Are Fair" with a perfect score in every battle.
Complete "A High Hope for a Low Heaven" with a perfect score in every battle.
Complete "Death Will Have His Day" with a perfect score in every battle.
Complete "In Nature’s Infinite Book of Secrecy" with a perfect score in every battle.
Complete "The Evil That Men Do" with a perfect score in every battle.
Complete "Of His Bones Are Coral Made" with a perfect score in every battle.
Complete "The Isle Is Full of Noises" with a perfect score in every battle.
Complete "The Rude Eye of Rebellion" with a perfect score in every battle.
Complete "Journeys End in Lovers Meeting" with a perfect score in every battle.
Complete "When Beggars Die, There Are No Comets Seen" with a perfect score in every battle.
Complete "Once More Unto the Breach, Dear Friends" with a perfect score in every battle.
Complete "All that Lives Must Die" with a perfect score in every battle.
Deal a total of 300 damage using Damage();.
Complete "The Tempest" with a perfect score in every battle.
Complete the game with a perfect score in every battle.