The John Wick Weapon Pack Add-on for PAYDAY 2 has 4 achievements.
Complete the Firestarter job on the OVERKILL difficulty or above with your crew using only the Contractor Pistol. Unlocks the "Daisy" mask, "Dog Fur" material and "Daisies" pattern.
Kill 30 snipers with the Desertfox Sniper Rifle on the OVERKILL difficulty or above. Unlocks the "Mustang" mask, "Tire" material and "One Shot" pattern.
Kill 45 Russian specials on the Boiling Point job with the Jackal Submachine Gun on the OVERKILL difficulty or above. Unlocks the "Zashchita" mask, "Mist" material and "Battle Wounds" pattern.
Kill 8 guards with the Throwing Knife while crouching on the Murky Station job. The heist must be completed for any kills to count. Unlocks the "Hotelier" mask, "Club Lights" material and "Piety" pattern.