Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Acid Test	Chapter 3 Complete.
Can't Stop Now!	Chapter 5 Complete.
End of the Nightmare	It is done.
Feet the Heat	Chapter 6 Complete.
Game of Death	Chapter 7 Complete.
Killer Vines	Chapter 1 Complete.
Prelude to Murder	It has begun...
Scarlet Letters	Chapter 4 Complete.
Scratch the Surface	Chapter 2 Complete.