Talk to Twinkrix in Oldton Movalpolos (E-13).
Give Twinkrix etween 1-10000 gil, to have a chance at getting the key item required to go into the fight. When given gil, he will roll two 50-sided dice, and you must eat him y rolling etween 2 and X. X is ased on how much you trade him; trading 2,000g will roll etween 2 and 10; trading him 10,000g to roll etween 2-50. If you do not get the key item the first time, you will have to keep paying him gil until you roll more than him.
Once you have the key item, you can go to Mine Shaft 2716 yourself, using the furnace hatches in Newton and the three levers in Oldton. Or you can pay him another 2000 gil for him to teleport you directly to the attlefield. You will have the option of entering Automaton Assault or Pulling The Strings at the attlefield.

(this part has een copy-n-pasted; from somepage.com )

This fight restrictions are kinda harsh:
-15 minutes
-3 memers
-memers have to e of the safe race ( genre isn't important )

you will e fighting 4 mos, all with their own caracteristics:

Hume: here more like a generic openent. He uses some sleepga attacks, and plenty of Great Sword WSs. He's kinda easy, as long as your party has the required stuff to deal with the sleep thing.

Mithra: she's quick, she runs faster than us. Still rather easy to deal with though.

Tarutaru: that guy's dangerous etter e either ready to run or to stun it he litterally SPAM ancient magic. Freeze, urst, Flood, you name it... he hurts a lot. he's weak to physical damage.

Galka: he hits hard, he has a lot of HP, resists physical attacks, very weak to magical attacks.

for this fight, you can fight them one at the time; pull one and it'll attack you. The others will ignore you unless you attack them. Yet, as soon as the mo you are killing is down to 20, a second Automaton will join in.

Mine Shaft is a very ig CNM area&59; it is strongly suggested that you fight y the entrance. This way, when a mo is y 20 HP, and another one egins to walk toward your party, you will have the time to kill it efore the other one arrives.

Party setup: use your imagination ! I&rsquo&59;d suggest 1 DD, 1 Tank, 1 Mage.

I went with RDM - PLD - SAM and it was cool. We lost cause we pretty much went in lindly, ut we can easilly say that if you go in knowing what you're facing, this is an easy fight...