Boss Killing Events
Author: Kazuki
General info for events like the Kitsune event where you need to kill bosses for token drops.
Experience needed per level
Author: Chiaki Matsuda
(more)
Where to farm the "Defeat X enemy" weeklies
Author: Katyusha
Because I seem to answer this question constantly despite the sources on them, a quick guide to completing the kill based weeklies: