Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Act III	Finish Act III.
Act II	Finish Act II.
Act IV	Finish Act IV.
Act IX	Finish Act IX.
Act I	Finish Act I.
Act VIII	Finish Act VIII.
Act VII	Finish Act VII.
Act VI	Finish Act VI.
Act V	Finish Act V.
Act XIII	Finish Act XIII.
Act XII	Finish Act XII.
Act XIV	Finish Act XIV.
Act XI	Finish Act XI.
Act XV	Finish Act XV.
Act X	Finish Act X.