Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Big Shiny	Collect a Combo Chain Gem on any Act after the first.
Dedication	Kill 100,000 enemies.
Just Bodies	Kill 10,000 enemies.
Laboratory Shutdown - Absurd	Clear the Jungle Lab mission on Absurd difficulty.
Laboratory Shutdown - Easy	Clear the Jungle Lab mission on Easy Difficulty.
Laboratory Shutdown - Hard	Clear the Jungle Lab mission on Hard difficulty.
Laboratory Shutdown - Medium	Clear the Jungle Lab mission on Medium difficulty.
Shiny	Collect a Combo Chain Shard.
Start as you mean to go on	Kill 1,000 enemies.
Witch Down - Absurd	Clear the Halloween mission on Absurd difficulty.
Witch Down - Easy	Clear the Halloween mission on Easy difficulty.
Witch Down - Hard	Clear the Halloween mission on Hard difficulty.
Witch Down - Medium	Clear the Halloween mission on Medium difficulty.