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