Assaults are a fun little departure from the norm. Some are straight combat, but it seems like about a third of them have some sort of gimmicky twist. Like get monsters to inflict status ailments on you. Or land a critical hit and turn a lamia enemy into an NPC. Or sneak around lamia which won't attack but will teleport you. Some are easy, some are traumatically difficult. The non-combat ones, I find, are refreshing because they present an honest to goodness challenge that isn't about trying to survive a powerful monster. You don't see that a lot.
Some of the promotion quests are fun too. The SL and FL promotion quests involve puzzles and games of chance.
I've been running an Assault static since around January. We're almost up to Captain rank. Just need 2 more Assaults -- Lebros Supplies and Bloody Rondo. It was a 3-man static but Lebros Supplies I just can't manage with 3 and am combing the Earth looking for more bodies.
Zarchery, Hume, Monk 90, White Mage 90, Black Mage 90, Bard 61, Red Mage 50, Ninja 50, Warrior 50 and others.
Rank 10 Bastok
Alchemy 100+3, Cooking 60, Woodworking 60, Smithing 55, Goldsmithing 24, Leathercraft 17
Current and accurate as of 10-14-2010