Here is the full list of all 20 2084 achievements.
Kill 100 TV heads.
Kill 200 nanophage zombies.
Kill 50 TV heads.
Kill nanophage champion.
Hack 50 times.
Kill 100 nanophage zombies.
Hack 25 times.
Kill 50 nanophage zombies.
Hack 5 different objects.
Hack 10 times.
Hack without a single mistake 10 times in a row.
Finish the game under XXX minutes.
Decipher the message
Destroy 10 enemies with one grenade launcher shot.
Kill the Strongarm.
Distract Janus.
Destroy the Generator.
Hack 8 digit code in less than 2 seconds.
Overcharge your weapon.
Kill 5 nanophage champions.