Here is the full list of all 45 Scars Above achievements.
Crafted a weapon upgrade for all weapons.
Ignited multiple enemies with a single Flammable Liquid charge.
Kept an enemy within the Gravity Trap for its whole duration.
Used the shield to deflect incoming damage that would have killed you.
Completed the game.
Defeated the Omega and the Custodian.
Discovered Naya's fate.
Activated all pillars.
Scanned all hostile creatures.
Crafted all weapons.
Crafted all gadgets.
Defeated the Neuro-parasite.
Defeated the Feliform Cadaver.
Scanned all available unique natural resources.
Learned of Kate's special status.
Solved all puzzles.
Learned of the mysterious code hidden in genes.
Defeated the Construct.
Crafted all consumables.
Found the crashed remains of the Hermes.
Used the pulse scan to reveal an enemy weak point.
Killed an enemy while it was affected by the Holo-lure.
Unlocked all abilities.
Found Mr. Jefferson.
Reached the Grassy Plains.
Discovered Robinsons' transformation into the Alluvial King and had to kill him.
Activated 5 pillars.
Unlocked a tier 4 ability.
Crafted a weapon upgrade.
Solved the Alien Console puzzle.
Crafted the first gadget.
Defeated the Alpha.
Killed an enemy while it was in the frozen state.
Investigated the area around Richard's backpack and figured out where he went.
Crafted the first consumable.
Used the Mobile Printing Unit to craft the Thermic Charger.
Activated your first pillar.
Scanned a Knowledge Cube.
Unlocked the first ability.
Caused an elemental reaction.
Scanned first natural resource.
Scanned the first hostile creature.
Weathered the mysterious storm.
Discovered the Metahedron vista.
VERA assembled.