Quest 1: Chase Marduk 2
We need go further to chase the Marduk.

Like the Former Boss, it is attackable shortly only after it attacks us. So just catch the moment. It also has three attack modes.
1st is shoot into the sky and the bomb will directly fell to our head, we need to move all the way to escape this attack.
2nd is a Machine Gun shoot, deals 1XX damages constantly, need to avoid be in front of the boss.
3rd is a constant blade attack, also need to keep distance with the boss.
The better way is to summon you guardian to share the attack from the boss, and we just need to wait the best time to defeat it.
And we can finish the long quest now.
Quest 2: Iron Blade DungeonIt is time for us to complete the Iron Blade Dungeon first.
1/6 Trial of the Iron Blade is to kill 15 Skeleton Knights
2/6 Trial of the Iron Blade is to kill 15 Ogre Skeleton Warriors
3/6 Trial of the Iron Blade is to kill 15 Ancient Skeletons
4/6 Trial of the Iron Blade is to kill 15 Skeleton Mages
5/6 Trial of the Iron Blade is to kill 15 Skeleton Temolars
6/6 Trial of the Iron Blade is to kill 5 Iron Guardians
Then we now can summon the Iron Blade Guardian to Battle with us.
I find that my level is enough to go to next Dugeon, so let's go further.
Querst 3: Ice Blade Dungeon
1/7 Trial of the Ice Blade is to kill 15 Octopussys
2/7 Trial of the Ice Blade is to kill 15 Violent Octopussys
3/7 Trial of the Ice Blade is to kill 15 Mutant Octopussys
4/7 Trial of the Ice Blade is to kill 15 Abysmal Octopussys
5/7 Trial of the Ice Blade is to kill 15 Great Ocotpussys
6/7 Trial of the Ice Blade is to kill 15 Giant Octopussys
7/7 Trial of the Ice Blade is to kill 5 Ice Guardians
Now we can Summon the Ice Guardian as our compaigne.
That is Part 3 of the Aurum Blade