You’ll be able to pick up this side-quest by speaking with Yetka by the large, locked gate to the Eternal Flame area on your first visit to the Rhogar Realm. There are 5 Ancient Plates in total and you can hand these in after killing the Infiltrator boss.
They can be found in the following locations:
- Eastern Antechamber – In the small room at ground level with the lever linking the two antechambers together.
- Western Antechamber – After killing the first Tyrant use the Small Western Antechamber Key on the second floor of the Western Antechamber (by the Crossbowman). Inside you’ll find an Ancient Plate and a chest containing an Attribute Point Shard and a piece of Armour (leg - Cunning).
- Eternal Flame – in the small hallway beneath the Panorama to the left of the main Eternal Flame area. This is guarded by a Spellcaster.
- Abandoned Range – You can find this one in the small cave where you find the Checkpoint Crystal. It is guarded by Spiders at the back of the cave.
Sacred Hallways – Just after entering the Sacred Hallways, this is just on the left as you go down the stairs towards the Tyrant.
With all of these in hand, speak to Yetka after fighting the infiltrator boss to be given multiple shards as a reward. Thes include: Poison Resistance Shard , Magic Resistance Shard , Lightning Resistance Shard , Energy Shard and Magic Energy Shard .