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