Blitzkrieg

Walkthrough
Eliminate at least 200 monsters. Free the prisoner in the Northeast corner of the map for additional points. Eliminate up to 300 for additional points.
 * This mission contains two separate massive waves of weak enemies that swarm you a set period of time after you enter the Assault and move to an open area.
 * Take your time at the beginning to buff up, and prepare for a huge fight.
 * The first wave is the only one that needs to be completed for victory.
 * You will have to kill 200 enemies--raptors, cockatrices, puks, bugards, and mamool ja--which will swarm your group.
 * Each enemy has around 300 HP and does very little damage; Phalanx is heavily recommended.
 * The party will receive an announcement for every five enemies killed, increasing the tally.
 * Occasionally, a kill announcement will come with a temporary item: a body boost, magic boost, any ether, any potion, or Daedalus Wing.
 * Be sure to use your temporary items quickly when you receive them if you'd like duplicates; as they are rare you will only receive one of each until you clear the one currently in your inventory.
 * If you receive a regular Ether, though, and don't want another, just don't use it.
 * AOE moves are helpful, as is liberal casting of Sleepga.
 * After a certain number of enemies, an NM named Bluethunder Kaqool Ja may appear.
 * He is about a Tough to Very Tough enemy with around 3500 HP and Blue Mage abilities.
 * He is not a large threat if dealt with while the other enemies are asleep.
 * He will not always pop.
 * Whoever deals the killing blow to Bluethunder Kaqool Ja will receive a temporary key item "Blackscale Key" which can be used to rescue an NPC prisoner in the northeast corner of the map.
 * Escorting this prisoner back to the Rune of Release after the 200 mobs have been cleared will confer an Assault Point Bonus.
 * Trading the key from Bluethunder Kaqool Ja to the cell will trigger the second wave of enemies, which has about 100 mobs. These are purely optional, you may end the assault for a victory immediately after the 200 enemies are killed.
 * In this second wave a NM wyvern may appear which gives additional bonus Assault Points if killed.
 * After 300 mobs have been killed you will be informed that "You have decimated the enemy forces".
 * After the initial 200 enemies die there will be a temporary pause in fighting and the Rune of Release will spawn.