The Underworld Quest

A lot of people have had problems entering these two new instances, but by following these steps you can avoid them.

The first part of both quests is the same:
1. Go to Elysium Village which is located towards bottom right side of map
2. Go and speak to the Element Master and pick up the quest called "The Key to the Underworld".

Here it can look like you're being told Slifer has to be killed in a party, but this part of the quest can be done solo. If you read it properly, the party is only needed in the Underworld part.


3. Kill Slifer

Location  (437, 281).
Now teleport back to Elysium Village and hand in the quest.


4. Make sure you CHECK :
1) THEIR INVENTORY for the KEY
2) Make sure they have FIVE MILLION available to teleport
3) and at their QUEST LOG to make sure that it's not full (if anyone in the party has 20 quests, the maximum, it will stop the quest being taken).
One party member, the leader for example, could check by asking to see the other 5 members' keys and 5 mill in the trade window.
This is to try and avoid anything going wrong at this point.
If anyone has no key, they should be removed from the party and replaced, BEFORE the leader takes the quest to teleport everyone inside.
If the quest has been taken to go inside, and the party isn't teleported, then someone has either done it already that day, has no Key, or hasn't got enough money in their inventory, or no room for another quest. THEN EVERYONE HAS A MESSED UP QUEST and can't continue.
IMPORTANT NOTE A: If you die with no cleric to res you and no res scroll, you will be ported out if you release and be unable to complete the quest. So take at least one EP with you and a scroll just in case, and keep the cleric alive.


5. Once everyone is ready:
The party leader, and ONLY the Leader, speaks to the Element Master again and chooses either the Red or Blue quest. Which one to do is usually decided by everyone beforehand. The squad will be teleported into the chosen instance, The Kingdom of Isrifar or The Kingdom of Cosmos.IMPORTANT NOTE B: If the party doesn't teleport into the instance after the lead has taken the quest, then somebody either didn't have a key or didn't have 5 million available in their inventory. All you can do now is abort mission. Some people have more then one key so if you're lucky you can still reform a party and do the quest.
IMPORTANT NOTE C: The timer has started. You have 15 minutes to complete the quests given inside. It's a good idea to turn on the tracker in your quest log so you can see how much time you have left.
IMPORTANT NOTE D: Once inside the instance, the squad should STAY TOGETHER. If you all go off in different directions, some people might not get the kills they need and the squad will be held up.
NOTE:
Now you can leave whenever you're ready, but be warned that when the 15 minute timer is up, you will be teleported to West Archosaur, so it's not a good idea to go and do the other instance until the timer has run down.


KINGDOM OF ISRIFAR
When inside you see an npc called Isfar's Traitor. Take the 1st quest (and all following ones) from here.
These mobs are the nearest ones to the entrance. NOTE: With each part of the quest, you need to go further and further in to find the mobs. MOUNTS CAN BE USED in both instances.
TASK:
Kill 2 DARK KNIGHT
Kill 2 SOUL SHARD
Kill 2 SOUL DEVOURER
When done, go back to the npc, hand in and pick up the next part:
TASK:
Kill 2 RED HIDRA
Kill 1 GATEKEEPER
Once again, hand in at the same npc and get the next part:
TASK:
Kill 2 ISRIFAR'S GENERAL - There's one on either side of the boss.
Last part coming up. Back to the npc, hand in, and get the final part of the quest:
TASK:
Go kill the boss ISRIFAR


Rewards:
4x Voucher Of Underworld
10x Soul
10x Angel vessels
10x Demon vessels
10x Glass of PvP

10x Candy of PvP
10x Domination Orbs


KINGDOM OF COSMOS
Start out the same as 1-5 above but the party Leader chooses the Kingdom of Cosmos (blue) quest.
As soon as you get inside pick up the quest at the npc and start killing. Remember to stay together so kills count for all party members:
COSMOS'S TRAITOR - Quest NPC
TASK:
Kill 4 COSMOS'S RAINBOW
Kill 4 COSMOS'S VILLAIN
Kill 4 COSMOS'S HAMMER
Hand quest in at the traitor npc and get the next part. You must kill two emissaries next.
TASK:
Kill COSMOS'S EMISSARY
Hand in and pick up again. It's boss time. He's in the middle of the water on a platform.
TASK:

Kill COSMOS

Rewards:
2x Voucher Of Underworld
10x Soul
10x Angel vessels
10x Demon vessels
10x Glass of PvP
10x Candy of PvP
10x Domination Orbs