A logistics unit headed to the front lines of the war with the Far East was attacked and their supplies were stolen. The enemy then fled toward Leujaoam Sanctum. An Immortals unit will also join in the recovery.
A = Aggressive; NA = Non-Aggresive; L = Links; S = Detects by Sight; H = Detects by Sound; HP = Detects Low HP; M = Detects Magic; Sc = Follows by Scent; T(S) = True-sight; T(H) = True-hearing JA = Detects job abilities; WS = Detects weaponskills; Z(D) = Asleep in Daytime; Z(N) = Asleep at Nighttime; A(R) = Aggressive to Reive participants
Contrary to their name, the Immortals are in fact not immortal, and can be killed by the imps.
The imps can pop in a variety of locations, but will typically be spread throughout the map.
The Immortals have an advantage over players in this Assault: They are terrain-independent.
A common strategy is to leave someone at the start to talk to the NPC, and have the rest of the party go to (H-8) the long way (via the long winding tunnel at the south of the map).
Once in position, that person can talk to the NPC which pops the imps, and the group at (H-8) can immediately begin killing.
While the person who is left behind cannot actually prevent the Immortals from getting supplies, it is still wise to get the majority of the party in position before starting the actual mission; this way the Immortals will at best be able to prevent the party getting supplies from one or two imps.
If the group consists of 5 or more people, your initial positioning can involve 2 players at (H-8), 2 players at (H-9), and the initial person who pops the imps stay at the starting point. Then the two groups of 2 can work their way towards each other, effectively stopping the Immortals from both directions.
It is a HUGE help to have a kiter for this assault. The kiter pops the imps, while the rest of the party splits into 2 imp kill units beforehand, as mentioned above. After popping the imps, the designated kiter then goes into the first large area (where the Immortals are), and immediately grabs hate on whichever imp(s) they are fighting (the Immortals will probably split up as to solo their own imps), proceeding to kite the imp(s) around. They should continue to do this until the 2 imp kill units are done killing their respective imps and have searched the map to make sure there are no unclaimed imps. After this is done, they are to assist the kiter (who is likely to be in need of assistance by this point any way) by killing the kited imp(s). Using this strategy is how my group of 6 won this assault (split into 2 imp kill units and one kiter/imp popper).
Splitting into two groups failed because we simply could not stay alive long enough to earn enough packages. Instead we ended up moving as a 5 person team to H-7, popping the imps, and working our way backwards towards start. The 6th person, the one who popped the imps, would steal hate off the blue mages imps and kite them. If done correctly the blue mages should only have enough time to kill 3 imps (the ones at the start and two around I-8) before the player team clears out the remaining pops. You should not do this with less then 6 people, it's too much of a risk otherwise.
Having at least one BLU/NIN in the party can help, since they can kill imps easily without much risk.