pH, más que hamor, frensi.

Ghouls, half infected citizens.

You have a voracity gauge that fills up and to keep your sentience you must keep it below a red limit. You drop it by eating (human?) meat of any kind, and eating citizens alive nets you free hero days. Human meat also replenishes AP. You also get to stealthily enter and leave town and stay outside during the attack apparently. To balance, water is fatal, you must eat a citizen every day to survive and the risk.

Camping outside - if you do survive, you get bonuses to searches
Devasted cities - camping outside may let you outlive your fellow citizens. The town becomes completely useless in the process, however.
Hermit - higher chances to find food or water in the desert, which matters if you're on a 3+ day long expedition.
Tamer - you have a dog. The dog can carry items home for you. Put the dog on steroids and he'll even carry heavy objects.
Seasons - each three months long, each with their own official town standings. Every town scores one point per citizen per day. Winners get, for the following season, a couple of perks (but no free hero days).