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