Full list of all 68 The Outer Worlds achievements. It takes around 40-50 hours to unlock all of the achievements in the base game on Windows.
The base game contains 48 achievements, and there are 2 DLC packs containing 20 achievements.
Killed an enemy under the effects of 4 science weapons.
Skipped the Hope into the sun.
Saved Edgewater permanently.
Used the medical inhaler 300 times.
Killed 50 enemies with companion abilities.
Completed The Outer Worlds on hard difficulty.
Completed The Outer Worlds on supernova difficulty.
Brought robo-destruction to Edgewater.
Won the battle of Stellar Bay.
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.
Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.
Succeeded at 3 dialog conversation checks with a single disguise.
Had 75% or higher negative reputation with 3 factions.
Hit 30 enemies in the groin during tactical time dilation.
Killed 30 automechanicals with shock damage.
Killed 50 enemies with sneak attacks.
Killed 50 enemies with a tossball stick or tossball blocker.
Sold 10,000 bits worth of items to vendors.
Completed The Outer Worlds on any difficulty.
Killed 20 enemies that were infected by spreading N-rays.
Improved your gear 30 times through tinkering and mods.
Landed on Tartarus.
Skipped the Hope.
Completed the SubLight quest lines.
Simultaneously equipped Spacer's Choice brand clothing, headgear, and 4 weapons.
Wore 'A Nice Hat' and 'Chimaera' at the same time.
Turned 100 enemies to ash with plasma damage.
Character level 30 reached.
Learned the shocking truth about the colony.
Dealt with the cartographer.
Brokered peace between the Iconoclasts and MSI.
Completed all companion quests.
Starred in an Odeon Pictures movie.
Landed in Byzantium.
Acquired 3 flaws.
Raised a skill to 100.
Finished a companion's quest line.
Stopped the Monarch broadcasts.
Had 75% or higher positive reputation with 3 factions.
Killed a mega creature.
Used dialog skills 30 times in conversations.
Recruited all of the companions.
Reached Stellar Bay.
Saved the universe's greatest diet toothpaste recipe.
Got your very own ship.
Recruited a companion.
Landed in Emerald Vale.
Completed Murder on Eridanos on any difficulty.
Acquired Spectrum Gatling, The Needler, and Udder Buddy.
Received an invitation to Eridanos.
Found 20 Portable Phonographs.
Acquired Special Delivery, P.E.T., and Employee Benefits.
Completed Peril on Gorgon on any difficulty.