I'm essentially copy-pasting this guide from here:
http://www.xbox360achievements.org/forum/showthread.php?t=30...If anything seems off or weird, it's probably because I reference something I mentioned earlier, but normally that shouldn't be a big deal.
This guide assumes you are going for 1000 and need Lymle-100 Defeat the Ethereal Queen within 10 minutes. I also mention a lot about Arms Addict and quests and stuff, but in the end you'll end up fighting the Ethereal Queen.
You must have an untouched Laser Weapon for my guide to be of any use to you, otherwise you're going to have to spend a lot more time with factors and stuff.
-So now that you've beaten Gabe, it's time to tackle the Ethereal Queen, who is no joke by any stretch of the imagination. Furthermore, you need to beat her within 10 minutes, getting the kill shot with Lymle, who can only damage her with Hound Grenade. That means some preparation is necessary.
-Start by breaking the level cap (50% BT) on every character (except Faize) before even entering the Wandering Dungeon.
-You're going to want to pick the easiest battle trophies for every character. For example, Bacchus's 80 consecutive long-range hits, deal at least 99,999 points of damage for every character (Self Destructor 3000 (SD3K) + Sacred Pain on bugs on Aeos), and Sarah's 5,555 jumps are very easy and don't take very long (though I'd recommend a wired controller for Sarah in that instance). If you're running out of ideas, go ahead and go to the colosseum for every character but Edge.
-Your goal this playthrough is to get as few kills as possible with Edge, yet still get somewhere in the 70% range of battle trophies. You will NOT be doing Edge's 30,000 kills on this playthrough, so any kill you get with Edge serves no purpose whatsoever. This means avoid the colosseum, poisoned enemies, drops, etc. Doing them later will actually count for something and you won't waste any time. I managed to get 77% of Edge without getting 700 enemies killed, so it is entirely possible.
-Avoid anything like enemy type kills, item drops, exact damage, etc.
-Once you have that done (remember, easy trophies), take the EXP equipment you made a while ago and level everyone up to level 255. You don't need Meracle, Bacchus, or Myuria for the EQ, but it's nice to have them as backup just in case.
-Next you need 80,000,000 Fol. First, synth a bunch of Fol+++ equipment similarly to how you did the EXP equipment. Use Mille-Feuille (obtained from the Where's the Recipe? quest) to get the highest increase. Give Bacchus no weapon and the No Guard ability and go back to the Metal Scumbags on the 6th floor of the 7SD. Turn everyone on manual (to do this quickly, switch to them in battle and hit left or right on the d-pad) and spam Black Hole Sphere with Bacchus. The scumbags will steal Fol from you when they're in rush mode. After a little while, switch to a Scumbag Slayer and kill them. The Fol you earn counts the Fol the scumbags stole, so your synthed factors will help loads. 80 million Fol will come in no time.
Before entering the Wandering Dungeon for the first time, be sure you have the following:
-Everyone at level 255
-Dragon Roar
-Santa's orders (you probably just need the food)
-Fully-charged disintegration rings
-Lymle's charge skill maxed
-20 Disintegration Stones and Magical Clay
-All -ology skills maxed
-80,000,000 Fol (at least)
-3 hours of time
The Wandering Dungeon is composed of random floors, so there is no map. Every odd floor (1, 3, 5, etc.) has one of the following objectives:
-"Defeat our assassins." A simple 3-6 ambush battle. The best one to get.
-"Bring to us x Geostones." You have to collect Geostones from enemies as a drop, or find them in chests. The worst one to get.
-"Destroy the abhorrent crystals." Crystals are located in every room on the floor (except the one you start out in and the one where the objective is), each color requiring a different ring to destroy. This is where the Charge skill comes in handy, as the Light Ring has a solid 1 use and the Darkness Ring comes with a whole 3. Good on the early floors, but terrible on the later floors.
Every even floor (2, 4, 6, etc.) has a boss. They all drop Saraphic Dolls, which is all the red spire thing will ask for. The bosses are as follows:
2F: Prehistoric Psynard
4F: Ring Beast
6F: Chimera Beast
8F: Imperfect Armaros
10F: Armaros Manifest II
12F: Runaway Dragon
14F: Kokabiel Risen
16F: Shadow Edge, Bacchus, and Myuria
18F: Shadow Faize, Lymle, and Meracle
20F: Ethereal Queen
The hardest boss other than the Ethereal Queen is Armaros Manifest II by far.
WD Run #1
-Restart if you get Geostones on the first floor. It's not worth the grind when you can just leave and eventually get one of the other 2.
-Open every chest no matter what. You need to get the following weapons for Arms Addict, only located on certain floors:
-Artifact Bow (4F, 6F)
-Blazing Wand (7F, 8F)
-Infinity Saber (7F, 11F)
-Trident Harpoon (9F, 13F)
-Hidden Claws "Crimson Falcons" (10F, 12F)
-Blood Scepter (14F, 15F)
-Ultimate Cannon (16F, 18F)
-Demon Sword "Levantine" (17F, 19F)
-Lil Vending Machine 3 (9F)
-Lil Vending Machine 3 has all the items necessary to create symbol cards, saving you loads of time later.
-You will not get all of these in one run. There is only a chance they will show up on these floors, there is no guarantee. However, they will ONLY show up on the respective floors and not any others.
-Santa starts to show up on floor 9 and up. He only shows up in dead end rooms similar to those where bosses are. He can show up more than once even (I had him on 14 and 15 once) but it is very unlikely.
-If you get to him BEFORE fighting Armaros Manifest II, duck out immediately afterward. Either way, when you do reach him, complete all his orders FIRST, buy all the weapons and armors he sells, 20 tri-Emblems, all his skills, items, etc.
-If you had to beat Armaros Manifest II, you have no reason to stop yet. Go to floor 13+ and try to find a room with 2 or 3 Damascus Fort enemies. Fight them until you get a Philosopher's Stone drop (pretty rare). Stick Myuria in for the possibility that the -ology skill matters. You also need a Dragon God Scale, obtained from Dominator Dragons on floor 16+. You can steal them with Myuria or Meracle and escape, similarily to how you steal Magical Clay. Obviously they also drop them.
-If you get far enough, kill the shadows with the respective characters for those battle trophies. Yes, Faize is on Floor 18 and it's a huge pain later on.
-Definitely leave after reaching Floor 20 if for some reason you decide to go that far.
Synthesis Land
-The Calnus is still stuck on Disk 3 on Nox, which is the biggest pain of all. Therefore, Welch is stuck on Disk 3 and so is item creation. Boo tri-Ace.
-It's time to make some stuff to prepare for the Ethereal Queen! I recommend saving in a different slot before doing this.
Wrist: Take a tri-Emblum and synth 8 tri-Emblems to it. It should have the following factors:
HIT +2
Rush Gauge charge rate +3
Grants immunity to paralysis
MP cost -15% in battle
Duplicate this 4 times (so you have 5) at the cost of 1 Magical Clay each.
Neck: Take an Anti-Stun Amulet and synth an Anti-Silence amulet to it. Then synth 2 tri-Emblems. Factors:
Grants immunity to stun status
Grants immunity to silence
Rush Gauge charge rate +3
Grants immunity to paralysis
Duplicate this 4 times (so you have 5) at the cost of 1 Magical Clay each.
Armor: Create a Laser Suit in item creation. Take a different blank (no factors) armor (Alchemist's Cloak recommended) and give it the following factors:
Nullify HP damage 25% of the time (Blue Talisman)
DEF +20% (Potent Defense Seeds)
Maximum HP +20% (Potent Health Seeds)
ATK/INT/DEF/HIT/GRD +5% (Hyper Potion)
Synth that armor to the Laser Suit and it will get those factors. Then, synth your remaining 10 tri-Emblems to it but DO NOT DUPLICATE IT YET.
WD Run #2
-Now that you have your Super tri-Emblum and your awesome Anti-Stun Amulet, nothing in the first 19 floors should scare you.
-Open chests for any floors you do not yet have the weapon on. As you start to get more of them, WD runs go a lot faster.
-If you never got a Philosopher's Stone during your first run, be sure to get one now, as well as a Dragon God Scale.
-When you find Santa again, buy 20 tri-Emblems again and anything else you need.
Synthesis Land v2
-Start by synthing 5 more tri-Emblems to your Laser Armor from earlier.
Weapon: Take your untouched Laser Weapon and dupe it once for 11 Magical Clay. Next, take a blank weapon (Observer's Sword recommended) and give it the following factors:
Increases critical hit chance (Crystal)
Increases critical hit chance
ATK/INT/DEF/HIT/GRD +5% (Hyper Potion)
ATK/INT/DEF/HIT/GRD +5%
Synth that weapon to one of the Laser Weapons to pass along those factors. Then, take your final 15 tri-Emblems and synth them to that Laser Weapon.
Finally dupe the Laser Armor and Laser Weapon 4 times each (so you have 5 of each) at the cost of 11 Magical Clay each, or 88 Magical Clay. It's worth the effort in the end.
WD Run #3
-Before departing, make at least 1 Otherworldly Cuisine for Sarah for the Ethereal Queen, have 20 Fainting Potions, and a good few Resurrection UNITS. This is the most important thing to do and otherwise you will probably not get the trophy.
-Yeah, this is the hard one. Be sure to have 4+ hours of time to do this, as trekking to floor 20 takes some serious time and willpower.
-As usual, open up chests on floors you need to. You'll probably encounter Santa along the way so you may as well buy as many tri-Emblems as you can afford. There's no reason to go all out and grind Fol again though.
-When you make it to floor 20, take a deep breath and relax. The fight will be over within 10 minutes. But yes, read what I have to say about her first.
The Ethereal Queen
-First, watch a video of her if you haven't already. That should help you learn a little bit about her behavior.
-Your team is Edge, Reimi, Arumat, and Sarah, all with the gear you made earlier equipped. Lymle should be in reserve with the same stuff. Your skill setup is the following:
Edge @ Raging Strike x3, Critical Hit, HP Boost
Reimi @ Crimson Squall x6, Critical Hit
Arumat @ Dragon Roar x3, Critical Hit, Pride (why not?)
Sarah @ Nothing, HP Boost, Fury Boost
Lymle @ Hound Grenade x4, HP Boost, Fury Boost
-Obviously all skills are maxed. You should have more than enough SP for that.
-Before the battle, use an Otherworldly Cuisine on Sarah.
-Make sure all her healing spells and Resurrection are turned on and NOTHING else.
-As far as I know, menu time does not count, but I am NOT SURE about that.
-Start by taunting with Edge or Arumat to lure her into a corner away from Sarah. Then move Sarah into the opposite corner and park her there for the rest of the battle. Sarah's AI is great. She won't move or even attempt to attack, and the Ethereal Queen will not try to attack her since you used an Otherworldly Cuisine.
-Play as Arumat and spam Dragon Roar. Edge and Reimi should be doing their jobs just fine, just be sure to keep the EQ away from Sarah. The beginning of the fight will feel very easy.
-Rush combos take up more time than they're worth so I do not recommend using them.
-Keep an eye on the EQ's Rush Gauge. As you deal more and more damage, it'll start to decrease at a slower and slower rate while she's in Rush Mode. This is the key to knowing her health.
-Eventually, she'll start annihilating you with Supernova (if you hear "cease to be," you're basically dead). There's simply no defense against this except distance, which you don't have time to get. If she kills Arumat, Edge, and Reimi, switch to Sarah and use a Resurrection Unit to revive the whole team, then immediately cast Faerie Star. Hopefully you'll manage to get it off before she annihilates your team again.
-Once her Rush Gauge starts INCREASING WHILE SHE'S IN RUSH MODE, you need to do a couple things. Put Edge and Reimi on Manual. Use Dragon Roar twice MAX with Arumat. Then, take Arumat, taunt the EQ into a corner, and use a fainting potion on him and turn him to manual (while in the menu). Get Edge over there ASAP and do the same thing.
-Switch Reimi out for Lymle.
-Spam Hound Grenade like no tomorrow. You won't be doing very much damage (20k-30k), but every little bit counts. The EQ will normally not use Supernova with the fainting potions active, but you are in range so look out and be ready to switch to Sarah in case.
-IF the fainting potions run out before you get the kill (it happened to me), use them again and continue to spam Hound Grenade.
If You Got the Battle Trophy
-Great job!!!!!!!
-Find the nearest exit and get the heck out of the WD. You can either go back to the room you started at on this floor OR advance to the next one and use that room to exit.
-Save in a different slot JUST IN CASE. Odds are you won't need to fight the EQ in 2-wing form ever again, but it's nice to have the save available.
If You Didn't Get the Battle Trophy
-Well, I'm sorry. It pretty much sucks, but you're going to have to do this again later.
-Find the nearest exit and get the heck out of the WD. You can either go back to the room you started at on this floor OR advance to the next one and use that room to exit.
-SAVE IN A DIFFERENT SLOT FOR CERTAIN. You WILL return to this save at some point to try again (I hope). Don't let one failure put you off from completing this game. This is the hardest battle trophy for a reason.