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Arroyo is your home village, and you'll find a lot of prejudice against tribals throughout the game, though it really won't affect anything of importance. Keep "Vic's Water Flask" which you receive from the Elder woman. I once made the mistake of selling it and you can use it for "proof" of your ancestry in a couple places.
Your main goal here is simply to receive the main quest from the Elder--to find the Garden of Eden Creation Kit--and a few others as well if you wish for xp. Keep in mind that the order of areas in the walkthrough is just a guideline, and you're generally free to attempt them in any order, as long as you feel capable. Remember to search all bins and pots... and you may come up with $100 from inside one of the tents.
You can find Feargus standing by a well, and after the conversation, fix it using your repair skill for 100xp, and Lucas by the statue and Jordan in a tent will train you in unarmed and melee weapons respectively.
Quests & Opportunities
Here is a list of some of the quests and other opportunities in Arroyo, each with a brief synopsis containing at least one way to solve it. The remaining ways, and possibly other minor quests I will leave up to you.
1. Rescue Nagor's Dog, Smoke, from the wilds:
Speak with Nagor on the east side of the village and he'll ask that you find his dog. On the west end of the village near the Elder's tent, you'll find an exit grid. Head to the new wilderness area and you'll be confronted by roaming geckos. These critters are tough for a beginning character, so use the attack-once-run technique for taking any hostiles out. They won't all be hostile however, so weave your way through the trees, over the sludge and find the dog. Bring it back to Nagor for 100xp. While you're in the wilderness area, look out for broc flowers and xander roots, which you can give to the medicine man to make healing powders.
2. Find Vic the Trader:
This quest will be completed after you find Vic in the Den. See the Den, quest #8.
3. Obtain flint to have Mynoc sharpen your spear:
If you have a decent perception (6), find Mynoc the guard at the bridge in the south, and speak with him. You'll notice his sharpened spear, and if you mention it to him, he'll tell you he can do the same with yours if you fetch him some flint. Your Aunt Morlis in a tent near the statue has a piece, and you can steal it, ask her for it with a fairly high speech skill, or barter for it (did you take the scorpion tails?). Take it back to Mynoc and he'll give you a new sharpened spear.
4. Kill the evil plants that infest Hakunin's garden:
Northwest of the Elder's tent, you'll find the medicine man. He'll ask you to take care of the man-eating plants in his garden to the north. They're pretty difficult for a 1st level character unless you have something to throw or fire at them, so beware. When you've returned, he'll give you two healing powders (kind of offsets the ones you may have already used for defeating them), and can now make you healing powders with a broc flower and xander root.
5. Retrieve the GECK for Arroyo:
The is the main quest for Arroyo. You'll solve it much later so continue on to Klamath when you're finished here.