Each survivor is assigned one main skill, akin to a character class. This skill can be improved through experience or training. The main player is an exception, as they can level up all five of their skills.
A survivor's non-main skills can't be levelled up, but they can be improved using equipment and perks.
Character's leadership and charisma. This skill affects:
This is a bit of a misnomer, as it affects both attacking and defending. The effects are:
Character's knack for finding useful things. During scavenging missions, more stuff is found faster. It's unknown if this affects chance to find random items as well.
Character's knowledge of various scientific disciplines. This skill affects research speed, and engineers are faster at crafting items.