Gothic/Get-rich-quick schemes

In the chest from the blacksmith in the old camp (RRLRLL) you'll find 20 raw steel and 2 crude swords. Now go to the swamp camp. (Baal Parvez in the old camp can take you) Ask Lester (near the entrance) the way to the smithy. Pick the lock on the chest (LRRLLL) and you will find an axe (32 DMG/12 STR), mandibles of a minecrawler (you can take these to Kor Calom), 27 raw steel and 16 blades. Using the furnace (use+keep tapping up) your raw steel turns into glowing steel, the anvil turns glowing steel into glowing blades, the water bucket turns glowing blades into blades and the grindstone turns blades into crude swords. You now have 65 crude swords that can be sold/bartered for 3250 ore nuggets of value. And you have the axe, which is an excellent starter weapon.

Robbing Gomez

Once you have access to the castle, enter the house of the Ore barons during daytime. If you didn't join the old camp, ignore the guards.. they'll give up soon enough. On the right from the entrance of the house there is a chest in the brewery that doesn't require Gomez' key. Guards may or may not attack you for stealing from it, YMMV. The code is R L L L R L and you'll find 1× Troll skin, 5× Skin of a shadowbeast and 3× Wolfskin.

Go upstairs. The room on the left belongs to Gomez, you can't open his chests yet. Opposite Gomez' room there is a bedroom with a chest (R L L L R L L R) with 2× Extract of Healing (+70), 1× Amulet of Spiritual Power  0  0  0  8 , 120× worthless coins, a Dreamcall, 2× Candlestick and 1× Cutlery.

Right next to Gomez' room you'll find Bartholo's room. Here you find a chest (L L L L R L R L) with an Amulet of Stone Skin  15  15 . Opposite Bartholo's room is a bedroom that's shared by Arto, Scar and Thorus. There are three chests in that room, all with the same combination (R L L L L L R R) and the same contents: 1× Armor Amulet  15 , 1× Potion of Swiftness (1m), 1× Extract of Life (+10) and 4× Extract of Healing (+70) in each chest.

Go back to Bartholo's room, because there's one more thing here: a door. Pick the lock on the door (R L L L R L) to find yourself in a hallway with.. another door (L R L L L R) and now you're in the storage tower. On the first floor you'll find:

Chest on the left (R L L R R L R R): 32× Ham, 32× Rice Schnapps, 47× Grilled Meat, 56× Beer and 31× Wine
Chest in the middle (L L R R R L R R): 19× Cutlery, 10× Goblet, 2521 worthless coins and 500× Ore nugget
Chest on the right (L R R L L L L R): 2× Rusty Sword (10/5), 3× Withered axe (13/7) (barely worth picking the lock on this one)

Take the ladder to the second floor of the tower.

Chest on the right (R L L L R L R R): 30× Wolfskin, 30× Skin of a shadowbeast
Chest left of that (R R R L L R L R): 2× Ring of Flame Protection  0  0  3 , 3× Ring of Wooden Skin  0  5 , 1× Protection of Fire  0  0  5 
Chest between the shelves (L R R L R L L R): 13× Cutlery, 27× Claws, 13× Horn of a shadowbeast, 12× Teeth
Chest in the dark (L L R L R L R R): 27× Rice Schnapps, 34× Beer, 24× Wine

Hold on to at least one horn of a Shadowbeast for your ULU-MULU. Take the ladder to the third floor of the tower.

Chest in the corner (R R L L L L R L): 12× Elixir of Healing (+100), 13× Extract of Healing (+70), 13× Elixir of Magic Energy (+70), 5× Extract of Magic Energy (+50), 10× Potion of Swiftness (1m)
Chest left of that (L L L R L L R R): 24× Cutlery, 8897 worthless coins (the cutlery can be sold for 180 Ore so this chest is small change)

Take the ladder all the way to the top for a great view of the colony! On your way out, take some swords.

Note: do not do this at night, unless you like being stabbed.

Smoking Viper

At the bottom of the old mine (where you'll be going for the Test of Faith), you may have noticed Viper who is busy melting ore. He's also a merchant, he has 750 Ore nuggets. Interestingly, he has 124 life and no armor whatsoever, so why pay for it? His attacks are quite powerful, but he won't kill you.

First, drop any ore you are holding yourself. Just in case a guard comes to help Viper out and steals your ore. You actually don't have to worry about Viper stealing your ore, because you're gonna steal it back anyway. The templers who are clearly in sight were just hired to deal with the minecrawlers. They don't meddle with fights between members of other camps.
Position yourself between the machine with the orc slave and Viper (to stay out of sight) and knock Viper unconscious. If he knocks you unconscious, just wait until you get back up and hit him again.
Once he's out, take a quick look to make sure no guards are running to the scene. Pick up your ore (which you dropped) and loot Viper's body (move 100 items at a time, see controls) and make a run for it.

Chests in the old mine

There's a number of chests in the stores of Alberto and Santino. There's a fair amount of ore in them, but when you try to take it the guard will attack you, he won't kill you but will steal your ore so if you can disarm the guard, that'll help.

The highest value chest in the stores* is the center chest (R R R R R R) in the store at the top of the mine with 330 Ore nuggets.