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.
Brought robo-destruction to Edgewater.
Brokered peace between the Iconoclasts and MSI.
Completed The Outer Worlds on hard difficulty.
Completed The Outer Worlds on supernova difficulty.
Dealt with the cartographer.
Skipped the Hope into the sun.
Completed The Outer Worlds on any difficulty.
Killed 30 automechanicals with shock damage.
Killed an enemy under the effects of 4 science weapons.
Improved your gear 30 times through tinkering and mods.
Killed 50 enemies with sneak attacks.
Raised a skill to 100.
Character level 30 reached.
Killed an enemy with a science weapon sneak attack during TTD, with a weakspot critical hit.
Killed 20 enemies that were infected by spreading N-rays.
Killed an enemy that was hit with all 5 damage types.
Killed 50 enemies with companion abilities.
Saved Edgewater permanently.
Used the medical inhaler 300 times.
Killed 50 enemies with a tossball stick or tossball blocker.
Landed on Tartarus.
Wore 'A Nice Hat' and 'Chimaera' at the same time.
Completed all companion quests.
Completed the SubLight quest lines.
Simultaneously equipped Spacer's Choice brand clothing, headgear, and 4 weapons.
Turned 100 enemies to ash with plasma damage.
Recruited all of the companions.
Sold 10,000 bits worth of items to vendors.
Saved the universe's greatest diet toothpaste recipe.
Skipped the Hope.
Succeeded at 3 dialog conversation checks with a single disguise.
Had 75% or higher negative reputation with 3 factions.
Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.
Used dialog skills 30 times in conversations.
Finished a companion's quest line.
Learned the shocking truth about the colony.
Hit 30 enemies in the groin during tactical time dilation.
Starred in an Odeon Pictures movie.
Landed in Byzantium.
Had 75% or higher positive reputation with 3 factions.
Won the battle of Stellar Bay.
Acquired 3 flaws.
Stopped the Monarch broadcasts.
Killed a mega creature.
Reached Stellar Bay.
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.
Acquired Special Delivery, P.E.T., and Employee Benefits.
Found 20 Portable Phonographs.
Completed Peril on Gorgon on any difficulty.