Warlock is a dark magic class that deals damage over time and drains life from enemies. Its Blood Pact skill allows it to transform into a demon form with bonus armor, and spells like Life Drain and Ray of Darkness enable sustained attrition combat. Warlock is strongest in extended fights where its DoTs and healing reduction can chip opponents down.

Warlock has access to 4 active skills and 2 spell pages. Like all spellcasting classes, each spell page takes up an active skill slot, so you are choosing between more spells or more active combat skills when building your loadout. Blood Pact (0.2s) transforms you into a demon form that grants +30 max HP, +50 armor, and +50 magic resistance, while dealing 2 fire damage per second to nearby enemies at the cost of 1% HP per second. It is a near-instant toggle that functions as both an emergency cooldown and a sustained combat form. Blow of Corruption (24s) deals 12 Evil magical damage on hit and reduces the target's physical and magical healing by 80% for 12 seconds, making it extremely effective at shutting down self-healing classes like Fighter and Cleric. Dark Offering (24s) sacrifices 10% of your max HP per second in exchange for stacking +5% physical and magical power per stack, up to 10 stacks, with the bonus lasting 60 seconds. High risk but potentially massive power gain for aggressive players. Phantomize (28s) phases you out for 4 seconds and increases move speed, letting you walk through obstacles and disengage from dangerous situations, though at the cost of 50% magical damage reduction while active.

Warlock has 13 spells available. Bolt of Darkness (Tier 1) is a straightforward Dark damage projectile. Curse of Weakness (Tier 1) debuffs an enemy to reduce their effectiveness in combat. Power of Sacrifice (Tier 1) applies a damage over time Evil DoT. Bloodstained Blade (Tier 2) is a melee Evil damage strike. Curse of Pain (Tier 2) is an 8-second DoT that deals sustained Evil damage. Evil Eye (Tier 3) triggers 100 Evil damage on a killing blow, great for chaining kills. Spell Predation (Tier 3) deals Evil damage and scales directly with your magical power. Hellfire (Tier 4) creates a fire AoE that ticks every 0.2 seconds for roughly 5 seconds. Life Drain (Tier 4) leeches health from your target directly into you. Ray of Darkness (Tier 4) channels a beam of Dark damage for up to 5 seconds of sustained pressure. Eldritch Shield (Tier 5) provides a protective Dark barrier. Flame Walker (Tier 5) leaves a trail of fire as you move that damages enemies who walk through it. Summon Hydra (Tier 6) calls a Hydra that attacks enemies with fire damage per strike.

Warlock's starting stats are: Strength 11, Vigor 14, Agility 14, Dexterity 15, Will 22, Knowledge 15, Resourcefulness 14. The class excels in Will and Dexterity (22 and 15 base respectively), with lower values in Strength and Vigor.

Warlock has two distinct and popular build paths. The caster build stacks Will, Knowledge, Magical Power, and Magical Healing to maximize spell damage and DoT effectiveness. The Torture Mastery perk is central to this build, allowing curses to sustain you through prolonged fights by leeching health directly from enemies. High magical power amplifies every tick of damage, and stacking magical healing ensures the drain keeps you topped up even in extended brawls. Blood Pact serves as an emergency cooldown when things get desperate. The second popular build is Plate Warlock, which takes the Demon Armor perk to wear heavy armor and focuses on Strength and Vigor for raw physical durability. This version uses powerful two-handed weapons as the primary damage source and dips into spells situationally rather than building around them. It plays closer to a tanky melee class that happens to have a dangerous spell kit in reserve.

Warlock is a strong solo class regardless of which build path you take. Caster Warlock with Torture Mastery sustains through fights using curses, letting you heal while dealing damage and making prolonged solo encounters very manageable. DoT spells like Curse of Pain and Hellfire let you apply pressure and retreat while the damage ticks, rewarding patience over aggressive brawling. Blood Pact is your emergency panic button when things go wrong. Plate Warlock plays solo more like a melee bruiser, using heavy armor and two-handed weapons to tank hits while dipping into spells when needed, and is arguably even more forgiving solo thanks to the extra physical survivability.