The Gage Assault Pack Add-on for PAYDAY 2 has 10 achievements.
Own one of every Gage Assault Pack weapon in the game. Unlocks the "Short Barrel" for the Clarion rifle, "Light Stock" for the Gecko 7.62 rifle, "Plastic Foregrip" and "Assault Kit" for the Gewehr 3 rifle, "Evil" material and "Vicious" pattern.