PAYDAY 2: CRIMEWAVE EDITION

This can be done in a heist solo or with a group of random players. Here are the requirements;

Level: Any as Dynamite is available from the start.
Players: One to four
Heist: Any but ones where enemies drop in groups would be easiest, such as Bank Heist or Aftershock
Difficulty: Any but Hard / Very Hard is recommended for more Swat drops
Equipment: Dynamite throwable weapon

What you want to do is wait for a group of enemies to come together. This is most easily done when they drop out of a helicopter, as they will stay bunched together for a short while after they descend down. This means that if you time this well, remembering that the dynamite has a short delay before exploding, you should be easily able to kill at least three enemies with one explosion. To throw the Dynamite, press when aiming your curser. You can carry a max of three during a heist, so you may want to take a briefcase with you to resupply.

See video below for how I done this (please note that achievement doesn't pop as this was recorded using Xbox game capture).

I went and played high level heist which give you more enemys and then i threw dynamite at bundled up enemys