[ TREE OF SAVIOR ] Quest Guide : Open Sesame (+1 DEX)

【TREE OF SAVIOR】Quest Guide: Open Sesame (+1 DEX) 

Guide Version : Steam Release
NPC: Presences of Mystery (Invisible)
Location: Crystal Mine Lot 2-1F [-1281,-829]
Requirement : Complete all quests of 1F - 3F Crystal Mine
*Particularly, quest Mysterious Slate (Level 21), Crystal Mine 3F
Reward : +1 DEX

Latest Guide (Steam Release Version)

iCBT2 version Guide

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Quest Flow:
1. Completed all quests within 1F - 3F of Crystal Mine

2. Go to Lot 2-1F of Crystal Mine

3. Wander around Crystal Mine Lot 2-1F [-1281,-829] , a conversation will be prompted.
(if nothing happened, it might be bugged, skip this and move to Step 4.)

Click to Enlarge

4. Talk to the purifiers located at Crystal Mine 1F & 2F, obtained a number from each of them, total 5 purifiers.
(just proceed as long as the numbers still given by purifiers even if couldn't prompt (3) previously)
a. Entrance Purifier
b. Central Purifier
c. Circulation Purifier
d. Auxiliary Purifier)
e. Main Purifier

5. Go back to the spot that triggered the quest. Key in the number obtained from purifier following the sequence that you met the purifier from 1F to 2F in 'Normal' chat. This should reveal Presences of Mystery prompt the subsequent quest of Open Sesame (2).

6. Open Sesame (2) will require player to hunt certain amount undisclosed type of mobs, kill some of them to check which type corresponding to the quest. Fulfil the kill quota then report to NPC. END