Thief Skills Quests: Alcouskou starts with Alcouskou in Thief Guild (154, 128). The steps below are read from the quest's script on this server, in the order the script's quest stage moves through them.
Walkthrough

1 Talk to Alcouskou in Thief Guild (154, 128)
When At the start; Base class is Thief; Script check: JobLevel > 24 || BaseJob == Job_Assassin || BaseJob == Job_Rogue Choose “Sand Attack” Have with you 5 ×
Fine GritIt takes 5 ×
Fine GritI will be preparing for your
return. Find RuRumuni in
west Payon. That is where I
heard he is these days.
Script:
npc/quests/skills/thief_skills.txt:62· skill_thief_1 = 1
2 Talk to Bag Seller in Payon Town (91, 77)
When After step 1 Have with you 1 ×
Cactus Needle, 1 ×
Earthworm Peeling, 1 ×
CobwebIt takes 1 ×
Cactus Needle, 1 ×
Earthworm Peeling, 1 ×
CobwebYou get 1 ×
Leather Bag of Infinityto the Thief guild's Alcouskou
If you take him this, he will
teach you the skill that you
wish to learn.
Script:
npc/quests/skills/thief_skills.txt:470· skill_thief_1 = 2
3 Talk to Alcouskou in Thief Guild (154, 128)
When After step 2; Base class is Thief Choose “Sand Attack” It takes 1 ×
Leather Bag of InfinityYou get Skill
Sand Attack level 1I guess I have nothing more
that I can teach you.
I hope that this skill will
aid you in the future. -
Script:
npc/quests/skills/thief_skills.txt:150
Rewards over the whole quest
1 ×
Leather Bag of Infinity; Skill
Sand Attack level 1
How this page is made: every step comes from the NPC scripts the server loads for Episode 13.2 (the file and line are under each step). "When" lists the checks the script makes before that branch runs; "Have with you" are the items it counts; experience from getexp is multiplied by the server's 50x quest rate. NPC lines are the script's own text.