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