The goal of this instance is to get as many Shard of Gigantes as possible. The maximum you can get per run is 7.
Enter the Dimensional Crack and talk to Professor Bernhard (dali02 97 142), or use the Warper and select Instances > Sarah and Fenrir to enter this instance.
Go to the dungeon entrance by talking to the Warper > Heroes' Trails > Sarah and Fenrir.
As the party leader, talk to Professor Bernhard to create the instance.
Enter the instance by talking to the Dimensional Device NPC right next to it.
Walking near Fenrir will trigger the first animation. Some Mutant Galion will appear and attack you. They are fairly easy to kill. Fenrir will finish them off once her progress bar ends.
Move on to the next part by walking down.
Keep walking south and then go left up until you meet with Fenrir again.
The storyline is now split into two parts and you have to choose what you're going for:
Follow the main story by meeting with Fenrir at the top left section of the map.
Kill Ancient Gigantes and farm Shard of Gigantes for Professor Bernhard.
It is possible to do a mix of both stories to get the maximum amount of Shard of Gigantes.
If you choose to help Fenrir.
Keep walking left and then go all the way up to meet with Fenrir. The party leader has a marking on the minimap to indicate the location. You have 5 minutes to reach this location. If you don't make it in time, the next part of the story will trigger.
Once you walk near Fenrir, an animation will trigger. You must kill both Gigantes to progress, one of them is immune to physical damage and the other is immune to magic damage. You can wait it out and hide, the Gigantes will eventually die and you'll be able to progress.
Another animation will trigger and you'll be warped out.
You'll meet Fenrir again and she tells you to meet her at the castle (middle of the map). You have 5 minutes to reach the castle.
An animation with Sarah and Fenrir fighting each other will start.
Some Gigantes will appear and they're quite hard to kill.
Near the end of the animation, you have 50 seconds to kill Sarah. She has 200 HP.
Sarah drops 2 Shard of Gigantes and a Sarah Combat Robe.
You will now be warped back to the center of the map.
If you choose to help Professor Bernhard.
There is a total of 6 Ancient Gigantes which can be found in the following locations (check the image above).
Killing them will drop 1 Shard of Gigantes with 80% chance and is a party drop. These mobs can do a lot of damage and are fairly hard to kill.
After 5 minutes, the middle portal to enter the Castle will be active (it will be announced).
You now have 5 minutes to decide whether you go and help Fenrir or keep killing the Gigantes.
You will now go back with the main storyline and need to escape, otherwise Sarah will kill you with Lord of Vermillon.
Back with the main storyline
You now have to escape back to the entrance. You have roughly 2 minutes to do so.
Once you reach the end, Fenrir will reward you with a Yggdrasil Berry and allow you to make and enchant Sarah Earrings.
You can leave the instance by going into the top right portal where you spawned.
Enchanting
You must complete the instance and talk to Fenrir (at the end of the instance) to unlock the Sarah Earring's enchanting NPCs. Upon finishing it for the first time, talk to Professor Bernhard to receive your first ring. You only get one free ring per character.
You can purchase additional rings from the Assistant Professor in exchange of 1 Shard of Gigantes.
Assistant Professor will allow you to enchant your equipped rings. The enchantments are random, but you can choose which category of bonuses you want. Each ring can be enchanted twice (3rd and 4th slot) and every attempt costs 4 Shard of Gigantes. There is no chance of breaking.