Here is the full list of all 44 Afterfall InSanity Extended Edition achievements.
Sprint for 4000 meters (in total)
Smash 50 heads with a kick to the head in the finisher
Hack a device with L2 Security with less than 5 mistakes
Find an ammo pack in the vending machine
Listen to all recordings in the game
Find most of notes in the game
Kill 100 using headshots
Kill 30 opponents with Power Hammer
Kill 50 opponents with 'Pacyfikator' Telescopic Baton
Kill 30 using the finishers
Kill 50 opponents with Sickle
Kill 50 opponents with Firefighter's Axe
"Tranquilize" 20 opponents with Syringe
Kill 30 opponents with Raging Bull
Beat the game on InSane difficulty setting
Beat the game on Hard difficulty setting
Beat the game on Normal difficulty setting
Beat the game on Easy difficulty setting
Complete Level 1
Complete Level 2
Complete Level 3
Complete Level 4
Complete Level 5
Complete Level 6
Complete Level 7
Complete Level 8
Complete Level 9
Complete Level 10
Kill 100 with dismemberment
Finish first encounter
Finish second encounter
Finish third encounter
Finish fourth encounter
Finish fifth encounter
Finish sixth encounter
Defeat first boss
Defeat Second Boss
Defeat Third Boss