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