You can become evil three ways:
Talking to Gravelyn and clicking 'become evil'.
Going to mobius and talking to the mage girl to the right
Watching the storyline's clips. In the castle undead one, you can pick between good and evil.
10
you have to be a warrior rank 10 and a healer rank rank 10
if you are evil and whant a good rank you go to the king and buy a good reputation if you are nomad you choose it at chapter 2
Get rank 10 warrior and rank 10 healer. Then go to artix in the inn at swordhaven.
Rank 5
fight monster
go to shadowfall
when you rank up in aq worlds you will learn a new skill and also increasing your stats including your hp but not your mp.
You have to be Rank 10 Doomwood and buy it from the rep shop in Lightguard. Trust Point me if this helped, Thanks!
if you evil you can get it from the evil rep shop.
by doing quests from shadowfall leader person
rank 10 doomwood