Here is the full list of all 89 Outpath achievements.
Integer limit.
Improve all skills to the maximum level.
Build 300 builds.
Build 750 builds.
Read the 8 letters.
Sleep having in your inventory The Circle.
Break a big rock in one blow without tools.
Craft The Circle
Convert a Star Fragment into a Dark Star Fragment.
Electrify a Vacuum
Have all potion effects at the same time.
Drink 1 potion.
Eat a Poisoned Apple.
Craft a holy artifact.
Improve a skill with 7 points to the maximum.
Get the circle part I.
Break a star.
Convert a Quadstone prism.
Learn 50 skills.
Too much height.
Touch 10 rings without touching the ground.
Eat a pizza, a hamburger and an ice cream.
Eat a cake.
Break a tomb.
Oops.
Eat a Seaweed.
Craft 10000 items.
Rotate a block.
Change the name of a Teleporter.
Reset the market for a value greater than 10000.
Play for 100 in-game days.
Replace an island.
Reach 1000000 credits.
Gather 300 living souls.
Don't use collectors until you complete the game.
Craft 5000 items.
Feed your companion.
Build 150 builds.
Have amber, emerald, sapphire and ruby in your inventory.
Break a massive mushroom.
Sort items in a chest using a Stacker.
Remove color from a build.
Plant a seed.
Build an Amplifier.
Collect items from a collector with a full inventory.
Change song on the radio.
Change the color of a build.
Kill with the scythe for the first time.
Change the material of a build to brick.
Kill 250 creatures by hand.
Destroy 10000 resources.
Reach 100000 credits.
Build an Advanced Research Table.
Research all buildings on a research table.
ransform 15 creatures into bones.
Learn 25 skills.
Craft 1000 items.
Destroy 5000 resources.
Kill 150 creatures by hand.
Build a Mining Post.
Get 5000 credits in one go.
Activate an island.
Build 50 builds.
Reach 10000 credits.
Destroy 2500 resources.
Milk a cow.
Pat a chicken.
Kill 75 creatures by hand.
Speed up a craft.
Make a synergy.
Visit your personal cave.
Build a Breaker.
Kill a slime.
Kill 25 creatures by hand.
Sleep during the day.
Craft 100 items.
Learn 8 skills.
Expand an island to the maximum.
Destroy 500 resources.
Destroy 5 shinies.
Read a letter.
Buy your first monolith bundle.
Kill a turtle after having stolen its shell.
Steal a turtle shell.
Learn your first skill.
Grow your island.
Go swim.
Equip a tool for the first time.
Punch a tree until wood pops out.