To the Big Cave

We take the quest from Kekropus in Kamael Village.
The quest is completed only in a party and takes place in Netrnil's Garden instagram.
Party participants on Instagram can be all classes, levels 17-21 and those who do not have a first profession.
The leader of the group, who provides access to the inst, is a kamael with the quest Into The Large Cavern. Incoming ones are provided with a noob rebuff for 1 hour (ww,haste,acumen,btb). Time on Instagram is up to 70 minutes.
Mobs - Muertos, warriors, archers and magicians. There are a lot of archers.
There are no drops on Instagram, only keys to doors - drop from special mobs (Guardian of xxx).
The party's task is to knock out all the keys and Netrnil's Power and unlock all the doors with them in order to go to the raid boss Tiberias (level 22) and kill him.
There is a hidden door in the place indicated on the map with a yellow mark, on the square in front of this mark you need to use Netrnil's Power to make the hidden door appear.
Raid boss with guard - 3 warriors and 1 healer. The security is not too strong, HP is approximately equal to x4 or x6 mobs. The raid boss is apparently designed for a full party in NG gear, so the presence of D-grade players will greatly simplify the task. It's good to have a bunch of HP/GHP with you. Healers and nukers are generally not needed.
The raid boss gives the key to the next door, and 3 more doors are opened with passwords (similar to the Iconic Trinity quest: CRTR, CNCL, CHAOS).
The statue at the end of the room will tell the last shocking story about the origin of the island and the kamaels themselves and, to compensate for the moral blow to the fragile psyche, will offer to take pdef (Puma Skin top/bottom) or mdef.
After this, the quest is over and the statue will offer to teleport the participants from the insta (the teleport occurs not to the village, but to the pier).