I'd have to pick "I'm not here" due to requiring regular medicine, but assuming I'm decently healthy...
Food and water are less of an issue with my choices - it's the monsters I'm concerned about.>The Square
I need to be able to sell my artifacts to, you know, eat and drink.>Red Eyes
Easily the best. Living threats literally glow, and you still retain normal sight to boot.>Sensitive Ears
Again, scavenging isn't the issue, so Taste isn't terribly useful. Touch is pretty niche due to having to physically touch the walls (a huge risk in the trap ridden Ruins). Smell is great for detecting undead (arguably better at Sensitive Soul's sole niche), but Hearing is the best overall.>Hard Hat
You pretty much have to take this, as a cave in occurs without warning and you probably can't dodge it.>Electric Torch
Sometimes you need to see your surroundings - used sparingly to avoid being seen, this can help you avoid getting lost or falling to your death.>Tough Suit
A little extra protection can never hurt, especially against venomous spiders or snakes.>Hallowing
Perfect counter against the most dangerous type of enemy. Probably semi-required to beat the Turn Undead quest.>Bingo
His power, and more importantly his experience and expertise in The Crumbling Ruins, is invaluable.>Tuku
The walking tank and trap clearer. Unlike us fleshbags, he can waltz through triggering all the traps with barely a scratch. Bingo and I just need to follow his giant footsteps to avoid setting off more traps. He can also carry plenty of food, water, and loot without issue.>Ragged Mantle
Would go with Bulky Purse, but I need the leadership to rally the town for Turn Undead.>The Fauna
Not fun, but less damning with Red Eyes.>Turn Undead
Maybe, if these assholes are gone, a real society could form down here. The entire town congregating would boost the Hallowing tattoo to new levels for the final battle.