Chi acts as mana for the magic systems and allows for actions such as Chi-Blast, Grip of Darkness, Healing Flame, Shadow Fury, Teleport, and Vanish. These are often used in combat to deal with multiple enemies at once. Loot consists of weapons, money, and gems. Gems are used to improve armour, powers, and weapons. Each weapon has three slots for customization found during levels. These include a larger clip size, reload time, accuracy or more damage, but also attacks based on electricity, fire, ice, poison, targeting certain enemy resistance. Weapons and mods can be changed on the fly.
Enemy weaknesses and resistances are shown during fights, encouraging the player to adapt and customize the weapons. Later in the game the unused ones can be converted to craft new mods. Experience (karma) provides skill points that can be spent on cards for four categories (Life, Powers, Resource, and Warrior), which influence the play style. Each card can be upgraded multiple times and new ones are found often. There is also room for amulet slots, armour slots, multiplayer slots, and power slots. Many upgrades are provided by completing missions.
The campaign can be played cooperatively with up to four players online, using drop in drop out with scaling difficulty and no friendly fire. This campaign is otherwise identical to the one played alone. Cut-scenes often further the story between missions.