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