Here is the full list of all 41 Starlink: Battle for Atlas achievements worth 1,000 gamerscore.
Build your first Expedition workshop
Defeat Grax
Extend Starlink's range to bring the fight to Grax
Ally with all 5 Outpost types
Spend 14 Skill Points on a single pilot
Destroy a Dreadnought
Use Cold to defeat a Fire Giant
Acquire a Legendary Mod
Discover your first new planet outside the Trade Sector
Loot 10 derelict ships in space
Upgrade two sections of the Equinox to their maximum level
Invest in a pilot's Mentor skill, to make your whole crew stronger
Earn 3 skill points from mastering ships
Shatter 5 Frozen targets
Find a Warden Relic
Record every Discovery on a planet
Map every part of a planet
Gain 100% alliance on a planet
Earn 6 Pilot Skill points from mastering weapons
Equip 8 ship & weapon mods on a ship build, using Rare, Epic, or Legendary mods
Destroy A Prime
Use Heat to defeat an Ice Giant
Hit 5 targets with a single Stasis blast combo
Build 8 Equinox Upgrades
Trap 3 targets in a single Gravity Vortex
Defeat 10 targets by shooting at their weak spots using Precision weapons like Shredder
Use Fusion to craft a higher-level mod
Discover 5 Animal Species
Thermal Shock 10 targets
Time Active Shield perfectly to reflect an attack 10 times
Enter space from a planet for the first time
Equip your first mod
Build a Starlink Tower on every planet
Neutralize 5 Outlaw Hideouts in Space
Fill your ship with Epic or Legendary Mods
Discover all the planets in Atlas
Discover every animal species in Atlas
Defeat an Extractor or Prime with your shields down
In COOP, repair your partner after they get shot down
In COOP, defeat a Prime together
Get at least 25% alliance on every planet