Here is the full list of all 31 Entropy : Zero achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Die 100 times.
Complete the game on Normal mode or higher.
Beat the game on Bad Cop difficulty.
Destroy the Quantinode core.
Sneak through the rebel encampment.
Find all of the poem pieces.
Evict 20 Vortigaunts from Pillar 10. And from the realm of the living.
Kill the possessed Hunter.
Experience your first CFLU fever.
Survive the tunnels.
Ignite 20 Zombies using flares.
Protect the Stalker in the tunnels.
Find all of the Lambda Generation tags.
Find and wobble 7 Hula dolls.
Did you hear that?
Survive the grenade encounter.
Find the reference.
Find a prototype AR2.
Survive the betrayal.
Find the dead rebel leader.
Return the doll.
Kill 50 rebels.
Kill 40 rebels.
Turn the turrets back on the rebels.
Kill 30 rebels.
Kill 20 rebels.
Kill 10 rebels.
Throw it in a trashcan.
Pick up a can.
Wake up stranded in City 10.
Get 5 kills using Manhacks only.