Here is the full list of all 88 Lumencraft achievements.
Shred 25 items
Lose 5 buildings in quick succession
Survive all waves on First Encounter
Research all technologies
Collect 25,000 lumen
Hit 3 enemies with one spear throw
Throw a spear
Get a spear upgraded to the maximum
Place 25 turrets
Defeat 15 big monsters
Upgrade all turrets types to maximum
Research 24 technologies
Build 40 buildings
Get pistol upgraded to the maximum
Get 2 drills
Max out all stats
Place a gate
Collect 10,000 metal
Defeat 100 bugs
Upgrade the drill to the maximum
Collect 5,000 lumen
Research 12 technologies
Defeat 5 big monsters
Destroy a building and rebuild it again
Build 5 buildings
Defend against a wave without doing anything
Get machinegun upgraded to the maximum
Dual wielding same weapons
Die the first time
Research 2 technologies
Storage is full
Collect 1,000 metal
Fire the laser
Place 5 turrets
Collect 500 lumen
Stay in the base between the waves
Shred an item
Kill with flare
Win a map without shooting
Hunt the big enemy in Blast from the Past
Slay 100 monsters in First Encounter
Complete the tutorial
Finish with score above 367 460 on any map
Place 5 gates
Place 25 gates
Collect 100,000 metal
Collect 100,000 lumen
Shred 100 items
Shred 500 items
Defeat 500 bugs
Defeat 2,500 bugs
Defeat 10,000 bugs
Die 5 times
Die 15 times
Kill a boss with a flare
Win a base defense map without placing any turrets
Win Blast From the Past before 3rd wave
Upgrade speed to 11
Start 2 player Co-op
Survive all waves on Underground Survival
Survive all waves on Blast from the Past
Power up abandoned outpost on Underground Survival
Respawn 10 times in one map
Find 10 technology orbs
Create 69 clones
Construct 120 constructions
Place 200 turrets
Defeat 25 big monsters
Defeat 50 big monsters
Get shotgun upgraded to the maximum
Get the flamethrower upgraded to the maximum