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