This is a very easy achievement and even easier if you are a Warlock
This can be done very early on in the game, i did it on the 3rd Mission on Earth.
Get chased by some thrall, head near the Acolyte and use your Super Charge Ability, make sure you have 5 Enemies!
This is the easiest way to do it in my opinion but the Titans ability is another good choice, Hunter though is NOT recommended.