This is an exploration event, you only need to clear it once to get the rewards. So, no grinding required :).
 Bring Tent
 Have a hero that can escape (Kefka, etc), if you don’t have one then buy smoke bomb (Lost Village of Marlo) to escape from the battle
 Equip Charm Bangle and Diabolos to reduce the encounter rate (Don’t do this if you want to farm the dragons, more about this on other section)
The rewards on the secret room are available once you clear the written difficulty on the map, they’re not that good though compared to the clear rewards :).
|Diff||Unlocked floor||Clear Rewards||Secret Treasure|
|BGN||1F||100 Lapis||Mythril Dagger|
|INT||2F- 4F||Royal Sword (Atk +37)||Mythril Buckler|
|ADV||5F||Reflect Mail (Def + 46, SPr + 10)||Mythril Saber|
|PRO||6F||Mighty Hammer (Atk + 72, HP + 15%; Ligthning Element)||Golden Helm|
|ELT||7F||Trust Moogle||Golden Staff|
|2F||T1||Hi Potion x 3|
|T2||Turbo Ether x3|
|3F||T1||Star Quartz x3|
|T2||Phoenix Down x3|
|T3||Fairies’ Writ x5|
|T4||Rainbow Bloom x5|
|4F||T1||Prismatic Horn x5|
|T2||Calamity Gem x5|
|6F||T1||Calamity Writ x5|
|T2||Divine Crystal x5|
|T2||Star Quartz x5|
|T3||Phoenix Down x5|
BGN and INT are pretty easy. You won’t even need a guide to clear them. If you’re not able to clear them then simply level up. INT may give you a little bit challenge if you’re a newbie player, but if you have played about 2 weeks, then the battle should be pretty easy. So, I will only give guide for PRO and ELT difficulty.
I suggest you to run away from all battles including dragons while trying to clear the dungeon for the first time. This will give you a clear picture how strong your party is. If you seem confident that you’re able to clear the level and also defeat the dragon then you can come back later, but for the 1st time simply focus on the boss.
The bosses are really easy, they only use fira and thundara. The dangerous thing from them is chain effect. Follow these tips:
 Have Barfira and Barthundara
 You can easily inflict break to them, so use magic break/full break
 Focus on one target, once you have killed one the battle will become really easy
Remember that the ELT is really Elite, you really need an optimized party and strong friend to clear this one (and a nice planning)
 Have Shellga/Focus (increase yor spirit!! really important)
 on 1st turn buff your party (cheer and focus or protectga/shellga, etc). You can do anything you want with other characters!! He will use Gauge which will reduce your party’s parameter (resistance, etc).
 Make sure you use GUARD on 2nd Turn, he always use meteor
 Now, you don’t want to lower its health below 60% while his debuff (from gauge) still active. You will take too much damage if that happen. Simply heal and maintain your party resistance (Barfira and barstonra).
 After the debuff effect already gone, re-buff your party and then attack Xandes normally
 When he uses Dark Force (below 70%), use dispel or holy torch (item)
 Try not to reduce its health below 25%, because it will use darkness attack which make all your party’s HP to 1. Provoke is really important at this moment!!