Here is the full list of all 43 John Wick Chronicles achievements.
Kill 3 enemies with 1 grenade
Kill the Boss, while taking no damage from his Minigun
Drop your weapon 20 times
Destroy an enemy vehicle
Take 50 damages before dying
Fire 20 bullets before hitting a grunt.
Kill 5 enemies with headshots
25 Leg-Shots
Juggle the gun from one hand to the other
10 Headshots in a row
20 Head or Heart-shots in a row
Complete Training Sim in under 3 minutes
50 Crotch-Shots
Kill all Targets with Grenades
All kills are either Head or Heart Shots
10 Heart-shots in a row
Kill 200 enemies
Kill 500 enemies
100 headshots
200 headshots
50 kills from grenade
Complete Arcade Mode
Complete Simulation Mode
Shoot and kill all enemies fast roping from all the helicopters
Kill all enemies without using the sniper rifle
Throw back a grenade and kill an enemy
Shoot and kill the boss helicopter
10 head shots
Get 4 kills without missing a shot
Kill all enemies using the assault rifle
Kill 5 enemies without missing
Throw back grenade and kill an enemy
Take out the helicopter rappellers
Kill all enemies with Semi-Auto weapon only
Dying by your own grenade
Hit a grunt with a magazine.
Kill all civilians in the training room.
Fire 4 000 bullets in a level
Fire 50 000 bullets
Die without any shots fired.
Die 5 times in a row without hitting a grunt
Die during the rooftop boss
Die during the garage boss