UPDATE! Make sure to try the Saddle method first, but If you did the below and did not get the achievement yet, there's another possibility, thanks to Infected Cookie for discovering it--You apparently need to get the LORE for each T1 Hunt. Infected Cookie was missing the Spli-Ti Lore, and as soon as he rekilled Split-Ti solo and got the Lore, the achievement triggered.
SOLVED! If you did all the hunts and did not get the achievement, all you need is for someone to trade you Clawgrave's Saddle or obtain Clawgrave's Saddle! Thanks Onsidic for the update!
There are several ways you can go about doing this; the easiest would be tagging along on someone else's lure!
The harder way to do this is kill rare mobs for all your own trophies, then make your own lures, then do the hunts yourself.
Mix and match those two methods to get this done the fastest.
All six 1-Star hunts are these:
Arachne
Clawglaze
Fang of Dendar
Hedetet
Karkinos
Spili-Ti
This map shows where to find the hunts(where to put the lures to start the hunts):
To craft the 1-Star hunt lures yourself, you need to do several things:
How to make the Lures for the different Hunts:There are 7 different enemy types in Chult that can drop the trophies needed for the 1-Star lures.
The rare enemies that can drop the Level 1 lure trophies are these:
(you have to kill the common mobs to get a chance for the rare mob to spawn)
Smilodon: Smilodon's Tooth (common mobs are Chultan Tigers)
Rotting Ogre: Rotting Ogre’s Femur (common mobs are undead)
Batiri Brave: Batiri Brave’s Trinket (common mobs are Batiri)
Eotyrannus: Eotyrannus Talon (common mobs are Deinonychus)
Bigclaw: Bigclaw’s Pincer (common mobs are Crabs)
Venomtail: Venomtail Poison (common mobs are Scorpions)
Tyrannosaurus Rex: Tyrannosaurus Fang (common mob is the regular Tyrannosaur)
These enemies are not involved with the lures at all:
Allosaurs, Bears, Compys, Lions, Tarantulas, Thayans, and Velociraptors.
Here are the mob spawn locations:
To make the lures:All the vendors to get the lures from are just to the right of the entrance into Port Vyanzaru.Arachne Hunt: Smilodon Tooth and T-Rex Fang. Talk to Desha who will give you the
Embroidered Cloak lure.
Clawgraze Hunt: Batiri's Brave Trinket and T-Rex Fang. Talk to Ragash who will give you the
Batiri War Mask lure.
Fang of Dendar Hunt: Eotyrannus Talon and T-Rex Fang. Talk to Ragash who will give you the
Bottled Terror lure.
Hedetet Hunt: Flask of Venomtail and T-Rex Fang. Talk to Doriak who will give you the
Flask of Sulfur lure.
Karkinos Hunt: Big Claw Pincer and T-Rex Fang. Talk to Doriak who will give you the
Sailors Shroud lure.
Spili-Ti Hunt: Rotting Ogre Femur and T-Rex Fang. Talk to Aryn who will give you the
Preserved Heart lure.