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