In order to talk with the different NPCs on Hellbound you will need to get Caravan Certificates. There are 3 kinds of Caravan Certificates you can earn on Hellbound. If you do not have the proper certificate the NPCs will tell you that you are not trustworthy enough to talk with them.
The Drops
Ancient Tome of the Demon
Needed to purchase Dynastic Essence. Open them up to acquire Hidden pages and Demon Contracts: Used to purchase Dynasty Recipes and Materials (Must have Premium Caravan Certificate to trade)
Contained Life Force
Needed to acquire Premium Caravan Certificate.
Obtained by killing Celtus. He is in the Battered Lands with the Chimera. He spawns once every 2 - 4 Hours. He drops 5 Contained Life Forces. He is like a Mini Raid boss, be prepared.
Darion Badges
Needed to purchase a Native Set, Basic Caravan Certificate or Holy Water.
Life Force
Needed to acquire Premium Caravan Certificate.
Obtained by killing Chimera in the Battered Lands using Magic Bottles that can be obtained for 20 Scorpion Poison Stingers from NPC Kief at the Native Village.
Marks of Betrayer
Needed to acquire Standard Caravan Certificate
Drop from Wandering Caravans (Found in the area between Hidden Oasis and Caravan Encampment.)
Scorpion Poison Stingers
Needed to acquire Standard Caravan Certificate and Magic Bottles
Drop from Desert Scorpions and Sand Scorpions (Found in the area between Hidden Oasis and Caravan Encampment.)
The Purchaseable Items
There is a lot of items you purchase with the Hellbound Drops:
Basic Caravan Certificate
This is the first Caravan Certificate you can earn. This allows you to talk with Hude.
Acquire at Falk near the Hidden Oasis.
Requirements:
20 Darion Badges
Caravaner's Remedy
Remedy to cool down the heat of the Desert. The effect lasts 60 minutes. This item can not be traded.
Requirements: 25.000 Adena Standart Caravan Certificate
Dynastic Essence
Needed to exchange Dynasty Armor top for one with an armband.
Acquire at Legendary Blacksmith Shadai
Requirements: 432 Ancient Tome of the Demon
Holy Water
Needed to Kill Remnant Diabolist and Remnant Diviner at the Ancient Temple. When their HP reaches 0, use the holy water on them. Unlimited use.
Acquire at Bernarde at the Native Village (not far from Falk)
Requirements: 5 Darion Badges
Magic Bottle
Needed to Collect Life Forces.
Acquire at Kief at the Native Village (not far from Falk)
Requirements:
20 Scorpion Stingers (each bottle) Standard Caravan Certificate
Native Set
Needed to transform into a Native. (This set cannot be trade)
Acquire at Buron near Hidden Oasis
Requirements:
30 Darion Badges Basic Caravan Certificate
Put the set on, and you will get a new skill. Use that skill to transform to a Native. Use the untransform skill to return to normal.
Standard Caravan Certificate
Second Caravan Certificate you can earn, owning this allows you to acquire the Caravaner's Remedy.
Acquire at Hude near the Caravan Encampment.
Requirements: Basic Caravan Certificate Transformed to a Native (use Native Set) 60 Stingers of Scorpion 30 Marks of Betrayer
Premium Caravan Certificate
Final Caravan Certificate allows you to trade with Hude for Dynasty Armor Recipes and Mats
Acquire at Hude near Caravan Encampment.
Requirements: Standard Caravan Certificate Transformed to a Native (use Native Set) 56 Life Forces 14 Contained Life Forces
The Certificates in Detail
Basic Caravan Certificate
Give 20 Darion Badges to NPC Falk at the Hidden Oasis. Darion Badges drop from nearly any mob on Hellbound in different quantities.
Rewards
Tailor Buron (the Native NPC at the Native Village) will now exchanges 30 Darion Badges into Native Tunic, Native Pants and Native Helmet.
Wearing these clothes transforms you into a native. Once hellbound reaches level 1 Remnant Diabolist and Remnant Diviner will spawn at the Ancient Temple. These are undead ghosts of fallen soldiers that can not be killed. To lay theyr souls to rest you need to use Holy Water on them once they HP reaches 0. While transformed into a ntivce you can purchase Holy Water from the NPC Bernarde at the Hidden Oasis. 1 Holy Water coasts 5 Darion Badges and practicaly lasts forever.
Standard Caravan Certificate
Give 30 Mark of Betrayal (drop from Wandering Caravan in the Sand Swept Dunes) and 60 Scorpion Poison Stingers (drop from the Sand and Desert Scorpion) to Hude at the Caravan Encampment.
Rewards
Purchase Caravaner’s Remedy from the caravan trader for 25k adena each. This can cool down the heat of the Desert. The Effect lasts 60minutes. Note; Caravaner’s Remedy can not be traded.
Premium Caravan Certificate
Purchase a Magical Bottle (that can hold the Chimera’s magic power) from Kief at the Hidden Oasis for 20 Scorpion Poison Stingers.
Use the Magical Bottle on Chimera’s with less than 10% HP to collect their Life Force.
When you have beaten a Chimera almost to death so that only 1/10 of its HP remains, trigger the Bottle via a hotkey and capture its Life Force. This is a process somewhat similar to leveling a Soul Crystal.
Collect 56 Life Force from regular Chimeras and 14 Contained Life Forces from Celtus.
Celtus spawns every 2-4 Hours at the Battered Land.
Once handed over to Caravan Trader Hude at the Caravan Encampment you have gained Premium Caravan Certificate.
Rewards
Hude will now exchange Hidden First Pages, Hidden Second Pages and Demon Contracts into S80 Armor / Jewelry Reciepes and Materials.
Special Note: Chimeras are located at the Battered Lands. To get access to that area Hellbound needs to be leveled in general to at least level 6.
Mark of Friendship and Trust
There is no further information about the Mark of Friendship and Trust.
Some players say that maybe it has not yet been introduced into the game.
The Table for the S80 Recipes and Parts
With the Ancient Tome of the Demon when open them you will get the following items to trade for the recipes or parts:
HFP = Hidden First Page
HSP = Hidden SecondPage
DCF = Demon Contract Fragment