Ruins

The Ruins are the first dungeon that can be explored. The former halls and seat of the Ancestor's power, the Ruins are now a black, shifting maze of corridors firmly under the control of the Necromancers and their continuously expanding undead army.

Provisions

 * Antivenom less effective here than in other locations due to comparative lack of DOT attacks.
 * Holy Water extremely useful for curio interactions.
 * Skeleton Key being a close second considering the amount of locks usually encountered.

Party Composition
Characters reliant on doing Bleed damage much less effective in Ruins than in other locations due to the presence of skeletons (which cannot bleed). Conversely, characters proficient with Blight attacks become extremely useful here as most enemies have very low blight resistance, and there are a few enemies with high PROT (less susceptible to regular damage, more susceptible to DOT).

Crusader does realy good in Ruins due to his increased damage to unholy, Grave Robber is fast enough to kill Bone Courtiers before they get a turn.

Strategy
The ruins are the easiest region to explore: skeletons don't have many special attacks, multiple holy curios with positive effect are easy to come by, urns and cabinets provide for some good loot. Bone Captain is weaker than his counterparts from other regions. It's also worth noting that the Ruin's traps only do regular and stress damage, with no DOT or debuff.

The general strategy is to kill stress/damage dealers in the back ranks first, then focus on enemies without PROT, leave Bone Rabble and Bone Defender for last, as they don't hit that hard. Pulling Bone Courtier or Bone Arbalist to the front rows as well as knocking Cultist Brawler back to 3/4 position can be a good idea: they will use weaker attacks to get back to their desired position.

Things to watch out for:

 * Bone Spearman in rank 1/2.
 * Stress dealers such as Bone Courtier, Cultist Acolyte and Madman.
 * Books.

List of Ruins Monsters
Shared Monsters

Curios Found in all Dungeons

 * Crate
 * Sack
 * Sconce
 * Discarded Pack
 * Heirloom Chest
 * Stack of Books
 * Unlocked Strongbox
 * Locked Strongbox
 * Large Strongbox
 * Shambler's Altar

Curios Exclusive to Ruins

 * Alchemy Table
 * Altar of Light
 * Sarcophagus
 * Locked Sarcophagus
 * Locked Display Cabinet
 * Holy Fountain
 * Decorative Urn
 * Confession Booth
 * Bookshelf
 * Iron Maiden
 * Suit of Armor
 * Eldritch Altar