Here is the full list of all 39 Entropy : Zero 2 achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Earn bronze medals on all challenge maps.
Earn silver medals on all challenge maps.
Earn gold medals on all challenge maps.
Complete the game on Hard difficulty.
Reunite with Scar Zero at Entropic Control.
Neutralize Dr. Mossman's helicopter on the Arbeit 3 helipad.
Find and open all of the Wilson closets.
Find and kill all 4 instances of the Temporal Crab.
Kill 25 alien creatures with the crossbow.
Kick open 60 doors.
Witness the secret temporal overlay in the monitoring station.
Find the 19 audio recordings at Arbeit 1.
Reach the secret lab within Arbeit 1 with five soldiers.
Get health from a surrendered medic.
Reach the extraction point with four soldiers.
Decide against pulling the trigger.
He's in the system.
Kill the Advisor.
Kick the Advisor.
Complete the game on Normal difficulty or higher.
Wipe the slate.
Stop your predecessor.
And there it is.
Bring Wilson to the upload station at the end of the game.
Capture Judith Mossman.
Drive to Arbeit 2.
Kill both of the gonomes in the Xentarium.
Kill 18 rebels using the 357.
Enter the domain of the Project on your way to Arbeit 2.
Flip your APC.
Escape the chamber catacomb beneath Arbeit 1.
Consume 10,000 kg with Xen grenades.
Kill the gigantic man-eating monster.
Meet Wilson.
Meet the Miscreant Agent.
Lead the invasion of Arbeit Communications.
Kill a long-jump rebel whilst they are in mid-air.
Fight to the extraction point in Nova Prospekt.
Relive the past.