Combat in Dispersion mixes auto-attacks, class abilities, gear rarity and crowd control. Damage is physical, magic or true. True damage bypasses part of normal defenses and does not retrigger some passives (for example Fury’s true damage).
Crits, dodge, armor ignore and vamp depend on the class. Party allies do not damage each other, including most abilities.
Possessed mobs use the chosen class kit. Slasher and Duelist dashes on possessed mobs need line of sight and a close-in: damage is dealt only after they reach melee range, not instantly from any distance.
Patch 1.2.1a adds the direwolf (undead, 90 HP / 24 damage, packs in Darkwood) and clarifies possessed mobs: names like Class [LvlN], dashes only with line of sight.