Find the tombstone in each map.
Drop 2 Coolie Zombie's Tooth in front of the tombstone.
A treasure box will appear. Lich's power will be weaken.
1) If you hit the box till it disappeared, and go kill Lich, you
gain zero experience.
2) If you go kill Lich directly after the treasure box appeared
without destroying the treasure box, you will gain experience.
Lich is weaken after the treasure box appeared. Kill Lich.
Lich will drop a book: The Bible of Corrupted Person. Use
of the book not known yet.
* Lich only appears between 12 am - 4 am daily.
