Full list of all 68 The Outer Worlds achievements worth 1,390 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game.
The base game contains 48 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 20 achievements worth 390 Gamerscore.
Stopped the Monarch broadcasts.
Had 75% or higher positive reputation with 3 factions.
Used dialog skills 30 times in conversations.
Acquired 3 flaws.
Hit 30 enemies in the groin during tactical time dilation.
Recruited all of the companions.
Reached Stellar Bay.
Saved the universe's greatest diet toothpaste recipe.
Succeeded at 3 dialog conversation checks with a single disguise.
Got your very own ship.
Simultaneously equipped Spacer's Choice brand clothing, headgear, and 4 weapons.
Killed a mega creature.
Recruited a companion.
Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.
Landed in Emerald Vale.
Complete The Outer Worlds on any difficulty.
Complete The Outer Worlds on hard difficulty.
Complete The Outer Worlds on supernova difficulty.
Kill 50 enemies with companion abilities.
Improve your gear 30 times through tinkering and mods.
Kill 50 enemies with sneak attacks.
Kill 30 automechanicals with shock damage.
Use the medical inhaler 300 times.
Turn 100 enemies to ash with plasma damage.
Kill 50 enemies with a tossball stick or tossball blocker.
Sell 10,000 bits worth of items to vendors.
Have 75% or higher negative reputation with 3 factions.
Wear 'A Nice Hat' and 'Chimaera' at the same time.
Reach character level 30.
Finish a companion's quest line.
Kill an enemy that was hit with all 5 damage types.
Kill 20 enemies that are infected by spreading N-rays.
Raise a skill to 100.
Kill an enemy with a science weapon sneak attack during TTD, with a weakspot critical hit.
Kill an enemy under the effects of 4 science weapons.
Complete all companion quests.
Land in Byzantium.
Land on Tartarus.
Skip the Hope.
Learn the shocking truth about the colony.
Complete the SubLight quest lines.
Broker peace between the Iconoclasts and MSI.
Win the battle of Stellar Bay.
Save Edgewater permanently.
Bring robo-destruction to Edgewater.
Star in an Odeon Pictures movie.
Deal with the cartographer.
Skip the Hope into the sun.
Complete Peril on Gorgon on any difficulty.
Power the reactor.
Destroy the Synthesizer.
Listen to Lucky Montoya's message.
Find Olivia Ambrose's journal.
Find Lucky Montoya's body.
Deliver the journal to Lucien.
Find 20 Portable Phonographs.
Achieve a compromise between Olivia and Minnie.
Acquire Special Delivery, P.E.T., and Employee Benefits.
Complete Murder on Eridanos on any difficulty.
Kill the Slug Queen.
Choose to either infect or cure Eridanos.
Receive an invitation to Eridanos.
Use the Discrepancy Amplifier for the first time.
Investigate every suspect and report your findings to Administrator Ludovico.
Discover the biggest secret in the aetherwave industry.
Acquire Spectrum Gatling, The Needler, and Udder Buddy.
Kill 50 Infected Humans or Parasites.
Ask a companion to be the Bad Inspector.