To unlock the High Elf, have the total amount of alignment in all characters in your guild over 200 points. To unlock the Dark Elf, have the total amount of alignment in all characters in your guild under -200 points. You must have at least three characters that are Lawful to create the High Elf or at least three characters that are Chaotic to create the Dark Elf.
The alignment system for one character ranges from -99 (pure Chaos) to 99 (pure Lawful), with 0 being pure Neutral. A new Lawful character begins with 9 alignment points. A new Chaotic character starts at -9 alignment points. A new Neutral character starts at 0 alignment points and remains as such until getting to 9 or -9 alignment points. Perform the following tasks to shift your alignment towards pure Chaos or Lawful:
TASK - ALIGNMENT SHIFT Pray at the temple matching your alignment - Move 1 point towards your pure alignment. Pray at the temple opposing your alignment - Move 2 points away from your pure alignment. Gain a level as a priest of an alignment - Move 4 points towards your pure alignment. Use a Level 3 or 4 Divine Spell in combat - Move 1 point away from your pure alignment. Use a Level 8 Divine Spell in combat - Move 3 points away from your pure alignment.