Just a list of how to get the breakthroughs (so far).
 
 

The list

This is not my work, just copy/pasted from https://techraptor.net/gaming/guides/sapiens-investigation-and-breakthrough-guide – [techraptor.net]  for ease of use for myself, thought maybe others might find it usefull so here we are.
 
 
Fire Lighting Unlocks
 
 
Campfire
 
Torch
 
 
How to Unlock Rock Knapping in Sapiens
 
 
You can unlock Rock Knapping by Investigating a Rock.
 
Rock Knapping Unlocks
 
 
Small Rock
 
Stone Hand Axe
 
Stone Knife
 
Stone Spear Head
 
Stone Pickaxe Head
 
 
How to Unlock Basic Hunting in Sapiens
 
 
You can unlock Basic Hunting by Investigating a Chicken with a Small Rock Tool.
 
Basic Hunting Unlocks
 
 
Allows you to hunt small prey like Chickens.
 
 
How to Unlock Thatch Building in Sapiens
 
 
You can unlock Thatch Building by Investigating Hay.
 
Thatch Building Unlocks
 
 
Thatch Hut/Roof
 
Thatch Square Wall
 
Thatch Roof Wall
 
Thatch Wall with Door
 
Large Thatch Roof Corner
 
Thatch Wall
 
Thatch Wall Single Window
 
Large Thatch Roof
 
Thatch Short Wall”
 
 
How to Unlock Pottery in Sapiens
 
 
You can unlock Pottery by Investigating Clay.
 
 
Pottery Unlocks
 
 
Mud Brick
 
Unfired Urn
 
 
How to Unlock Butchery in Sapiens
 
 
You can unlock Butchery by Investigating a dead Animal with a Knife.
 
Butchery Unlocks
 
 
Butcher Alpaca
 
Butcher Chicken
 
Butcher Mammoth
 
 
How to Unlock Flax Spinning in Sapiens
 
 
You can unlock Flax Spinning by Investigating Dry Flax.
 
Flax Spinning Unlocks
 
 
Flax Twine
 
 
How to Unlock Tree Felling in Sapiens
 
 
You can unlock Tree Feeling by Investigating a Tree with a Hand Axe.
 
Tree Felling Unlocks
 
 
Allows you to cut down Trees.
 
 
How to Unlock Digging in Sapiens
 
 
You can unlock Digging by Investigating the ground with a Hand Axe.
 
 
Digging Unlocks
 
 
Ability to dig up the ground.
 
Clay Path
 
Rock Path
 
Sand Path
 
Soil Path
 
 
How to Unlock Bone Carving in Sapiens
 
 
You can unlock Bone Carving by Investigating a Bone with a Knife.
 
Bone Carving Unlocks
 
 
Bone Knife
 
Bone Spear Head
 
Bone Flute
 
 
How to Unlock Flint Knapping in Sapiens
 
 
You can unlock Flint Knapping by Investigating a piece of Flint.
 
Flint Knapping Unlocks
 
 
Flint Spear Head
 
Flint Hand Axe
 
Flint Knife
 
Flint Pickaxe Head
 
 
How to Unlock Wood Working in Sapiens
 
 
You can unlock Wood Working by Investigating a Log after you’ve felled a Tree.
 
Wood Working Unlocks
 
 
Split Log
 
Log Drum
 
 
How to Unlock Threshing in Sapiens
 
 
You can unlock Threshing by Investigating a piece of Wheat.
 
Threshing Unlocks
 
 
Quern Stone
 
Hulled Wheat
 
 
How to Unlock Basic Cooking in Sapiens
 
 
You can unlock Basic Cooking by Investigating a Beetroot, Pumpkin, Chicken Meat, Alpaca Meat, or Mammoth Meat with a lit Campfire.
 
Basic Cooking Unlocks
 
 
Campfire Roasted Beetroot
 
Campfire Roasted Pumpkin
 
Cooked Mammoth Meat
 
Cooked Alpaca Meat
 
Cooked Chicken Meat
 
 
How to Unlock Tool Assembly in Sapiens
 
 
You can unlock Tool Assembly by Investigating either a Branch, Flax Twine, or a Tool Head (Hand Axe, Spear Head, etc.) after having Investigated Flax Spinning.
 
Tool Assembly Unlocks
 
 
Stone Hatchet
 
Balafon
 
Stone Spear
 
Stone Pickaxe
 
Flint Spear
 
Bone Spear
 
Flint Pickaxe
 
Flint Hatchet
 
 
How to Unlock Wood Building in Sapiens
 
 
You can unlock Wood Building by Investigating a Split Log.
 
Wood Building Unlocks
 
 
Split Log Hut/Roof
 
Split Log Bench
 
Split Log Wall with Door
 
Split Log Floor 4×4
 
Split Log Wall with Large Window
 
Split Log Wall
 
Split Log Steps 2×2 Half Floor
 
Split Log Roof Wall
 
Split Log Square Wall
 
Split Log Floor 2×2
 
Split Log Steps 2×3 Single Floor
 
Split Log Short Wall
 
 
How to Unlock Planting in Sapiens
 
 
You can unlock Planting by Investigating any Farming Crop with a Hand Axe.
 
Planting Unlocks
 
 
Allows planting of Crops.
 
 
How to Unlock Music in Sapiens
 
 
You can unlock Music by Investigating a Log Drum, Bone Flute, or Balafon.
 
Music Unlocks
 
 
Ability for Sapiens to play Music.
 
 
How to Unlock Grinding in Sapiens
 
 
You can unlock Grinding by Investigating Hulled Wheat with a Quern-Stone.
 
Grinding Unlocks
 
 
Flour
 
 
How to Unlock Mud Brick Building in Sapiens
 
 
You can unlock Mud Brick Building by Investigating a Dry Mud Brick.
 
Mud Brick Building Unlocks
 
 
Mudbrick Floor 4×4
 
Mudbrick Floor 2×2
 
Kiln
 
Mudbrick Column
 
Mudbrick Wall
 
Mudbrick Square Wall
 
Mudbrick Wall With Door
 
Mudbrick Half Wall
 
Mudbrick Wall with Large Window
 
 
How to Unlock Spear Hunting in Sapiens
 
 
You can unlock Spear Hunting by Investigating an Alpaca or Mammoth using a Spear.
 
Spear Hunting Unlocks
 
 
Ability to hunt large Animals like Alpaca and Mammoth.
 
 
How to Unlock Mining in Sapiens
 
 
You can unlock Mining by Investigating a Boulder with a Pickaxe.
 
Mining Unlocks
 
 
Allows you to Mine Boulders.
 
 
How to Unlock Baking in Sapiens
 
 
You can unlock Baking by Investigating Flour with a lit Campfire.
 
Baking Unlocks
 
 
Flatbread
 
Bread Dough
 
 
How to Unlock Ceramics in Sapiens
 
 
You can unlock Ceramics by Investigating an Unfired Urn with a lit Kiln.
 
Ceramics Unlocks
 
 
Fired Urn
 
Unfired Tile
 
Brick
 
Tile
 
 
How to Unlock Brick Building in Sapiens
 
 
You can unlock Brick Building by Investigating a Fired Brick.
 
Brick Building Unlocks
 
 
Brick Half Wall
 
Brick Wall
 
Brick Square Wall
 
Brick Wall with Door
 
Brick Wall with Large Window
 
 
How to Unlock Tiling in Sapiens
 
 
You can unlock Tiling by Investigating a Tile.
 
Tiling Unlocks
 
 
Tile Floor 2×2
 
Tile Hut/Roof
 
Tile Path
 
Tile Floor 4×4
 
 

 
 
I hope you enjoy the Guide we share about Sapiens – Playthrough + Gameplay Guide; if you think we forget to add or we should add more information, please let us know via commenting below! See you soon!