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.
Skipped the Hope into the sun.
Had 75% or higher negative reputation with 3 factions.
Killed 50 enemies with sneak attacks.
Completed The Outer Worlds on hard difficulty.
Completed The Outer Worlds on supernova difficulty.
Brought robo-destruction to Edgewater.
Brokered peace between the Iconoclasts and MSI.
Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.
Dealt with the cartographer.
Completed The Outer Worlds on any difficulty.
Succeeded at 3 dialog conversation checks with a single disguise.
Landed on Tartarus.
Completed the SubLight quest lines.
Character level 30 reached.
Skipped the Hope.
Learned the shocking truth about the colony.
Starred in an Odeon Pictures movie.
Turned 100 enemies to ash with plasma damage.
Completed all companion quests.
Improved your gear 30 times through tinkering and mods.
Finished a companion's quest line.
Landed in Byzantium.
Won the battle of Stellar Bay.
Hit 30 enemies in the groin during tactical time dilation.
Stopped the Monarch broadcasts.
Raised a skill to 100.
Sold 10,000 bits worth of items to vendors.
Recruited all of the companions.
Reached Stellar Bay.
Used dialog skills 30 times in conversations.
Had 75% or higher positive reputation with 3 factions.
Acquired 3 flaws.
Got your very own ship.
Recruited a companion.
Killed a mega creature.
Landed in Emerald Vale.
Kill 50 enemies with companion abilities.
Kill 30 automechanicals with shock damage.
Use the medical inhaler 300 times.
Kill 50 enemies with a tossball stick or tossball blocker.
Simultaneously equip Spacer's Choice brand clothing, headgear, and 4 weapons.
Wear 'A Nice Hat' and 'Chimaera' at the same time.
Kill an enemy that was hit with all 5 damage types.
Kill 20 enemies that are infected by spreading N-rays.
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.
Save the universe's greatest diet toothpaste recipe.
Save Edgewater permanently.
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.