The K.L.A.S. shovel is used by military forces for a variety of purposes. The shovel can be found among survivalists, freedivers, campers, hikers, gardeners and war re-enactment groups. It can also be used as a weapon - sharpen the edges and you'll be cutting through flesh and bone. If you use it correctly, that is. Which you don't.
The K.L.A.S. Shovel is a melee weapon available in PAYDAY 2. It is available to all players at reputation 4 who have the Gage Shotgun Pack DLC.
Everyday I'm Shovelin' On the Nightclub heist, kill 25 law enforcers using your shovel. Unlocks the Short Barrel for the Raven shotgun. (Note: Only the killing blow needs to be dealt using the shovel; enemies can be weakened with another weapon first, then finished off.)
K.L.A.S is an abbreviation used by the Swedish army and stands for "Kort, lätt attackspade" which translates into "short, lightweight attack shovel". The "Shovel" suffix becomes redundant in this written-out form.
The achievement "Everyday I'm Shovelin" is a reference to the song Hustlin' by Rick Ross, and the revised version of a similar line in Party Rock Anthem by LMFAO.