Here is the full list of all 40 Variables achievements.
Get a turret F3 at fisrt level
Have 10000 or more money
Kill a monster that can defeat you at the last tile
Own 21 or more system plugins
Have a path longer then 300 tiles
Deal 5 million damage in ont hit
Have a turret with 8 or more equipments
Accumulate 1 million acid on a monster
Have 10 supply chances
Have 20 supply chances
Own 7 different level 6 turrets
Kill BioSlime
Kill "Masochism", The Robot
Kill Mad Racer
Kill Mobile Signal Jammer
Kill The Overgrowth
Kill Mechanical Serpent
Kill AI Zealots
Kill Eon Sphere
Kill "Deep Space", The Drone
Kill Mechanical Serpent Prototype
Kill Synthetic Rampager
Kill Super Hero
Kill The Creator
Kill Peter, The Big Shield
Kill Project: Higher
Kill Devourer
Kill 10000 monsters
Defeat all elites
Defeat all bosses
Pass difficulty 0
Pass difficulty 1
Pass difficulty 2
Pass difficulty 3
Pass difficulty 4
Pass difficulty 5
Pass ultimate difficulty
Unlock all equipments
Unlock all system plugins
Unlock all achievements