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