The The Butcher's Western Pack Add-on for PAYDAY 2: Crimewave Edition has 3 achievements worth 80 gamerscore.
Get 10 or more arrows stuck in a Bulldozer at the same time.
Kill 3 enemies at the same time with the Dynamite.
Kill 6 law enforcers within 6 seconds of killing the first while hipfiring with the Peacemaker .45